{"id":3969,"date":"2026-06-15T23:07:16","date_gmt":"2026-06-15T15:07:16","guid":{"rendered":"https:\/\/hengyaochair.com\/?post_type=product&#038;p=3969"},"modified":"2026-10-08T22:39:31","modified_gmt":"2026-10-08T14:39:31","slug":"proveedor-de-sillas-de-oficina-ergonomicas-777-con-soporte-lumbar-4d","status":"publish","type":"product","link":"https:\/\/hengyaochair.com\/es\/product\/777-ergonomic-office-chair-supplier-4d-lumbar-support\/","title":{"rendered":"Proveedor de sillas de oficina ergon\u00f3micas 777: apoyo lumbar 4D y reposacabezas 2D"},"content":{"rendered":"<div class=\"image-gallery\">\r\n      <div class=\"main-image-container zoom-container\">\r\n        <img decoding=\"async\" id=\"main-image\" \r\n             src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-ergonomic-office-chair-supplier.webp\" \r\n             alt=\"Imagen principal\" \r\n             class=\"zoom-image\" \r\n             style=\"cursor: zoom-in;\">\r\n        <p id=\"image-description\"><\/p>\r\n        <div class=\"arrow-left\" onclick=\"switchThumbnail(-1)\"><\/div>\r\n        <div class=\"arrow-right\" onclick=\"switchThumbnail(1)\"><\/div>\r\n      <\/div>\r\n\r\n      <div class=\"thumbnails-container\">\r\n                  <img decoding=\"async\" \r\n            class=\"thumbnail\" \r\n            src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-ergonomic-office-chair-supplier.webp\" \r\n            data-main-image=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-ergonomic-office-chair-supplier.webp\" \r\n            alt=\"Silla de oficina ergon\u00f3mica modelo 777 para proyectos de espacios de trabajo al por mayor\" \r\n            data-description=\"Model 777 ergonomic office chair for wholesale workspace projects.\">\r\n                  <img decoding=\"async\" \r\n            class=\"thumbnail\" \r\n            src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-office-chair-2d-headrest-pu-castors.webp\" \r\n            data-main-image=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-office-chair-2d-headrest-pu-castors.webp\" \r\n            alt=\"777-silla-de-oficina-2d-reposacabezas-PU-ruedas\" \r\n            data-description=\"\">\r\n                  <img decoding=\"async\" \r\n            class=\"thumbnail\" \r\n            src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-mesh-office-chair-4d-lumbar.webp\" \r\n            data-main-image=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-mesh-office-chair-4d-lumbar.webp\" \r\n            alt=\"Silla de oficina de malla 777 con apoyo lumbar 4D\" \r\n            data-description=\"\">\r\n                  <img decoding=\"async\" \r\n            class=\"thumbnail\" \r\n            src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-office-chair-specifications-504pcs-40hq.webp\" \r\n            data-main-image=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-office-chair-specifications-504pcs-40hq.webp\" \r\n            alt=\"Especificaciones de la silla de oficina modelo 777 y plan de carga de 504 unidades en un contenedor 40HQ\" \r\n            data-description=\"Model 777 office chair specifications with a 504-piece 40HQ loading plan.\">\r\n              <\/div>\r\n    <\/div>\r\n    \n<h1>Silla de oficina ergon\u00f3mica de malla 777 con soporte lumbar 4D<\/h1>\n<p>Quick answer: Model 777 is an ergonomic mesh office chair for B2B buyers who need a clear 4-direction lumbar support story, 2D headrest comfort, flip-up armrests, and practical 504 pcs\/40HQ loading. It fits distributors, importers, corporate office programs, coworking spaces, and project buyers that need more function than a basic budget task chair.<\/p>\n<p>For sourcing, check lumbar movement, headrest fit, armrest alignment, mesh tension, seat support, gas lift movement, PP base balance, PU caster rolling, carton protection, and sample-to-bulk consistency. Compare the <a href=\"https:\/\/hengyaochair.com\/es\/office-chair\/\" target=\"_blank\" rel=\"noopener\">Categor\u00eda de sillas de oficina al por mayor<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/777-2-budget-mesh-office-chair-wholesale-716pcs-40hq\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla econ\u00f3mica 777-2<\/a>, y <a href=\"https:\/\/hengyaochair.com\/es\/producto\/silla-de-oficina-ergonomica-de-malla-999-venta-al-por-mayor-con-reposacabezas-3d\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina ergon\u00f3mica de malla 999<\/a> antes de confirmar las muestras.<\/p>\n<ul>\n<li>\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 384 512\"><path fill=\"currentColor\" d=\"M384 176l-65.3 0 26 285.8 1.6 18.2-48.2 0-1.3-13.8-13.3-146.2-183.1 0-13.3 146.2-1.2 13.8-48.2 0 1.6-18.2 26-285.8-65.3 0 0-144 384 0 0 144zM104.8 272l174.3 0-8.7-96-156.9 0-8.7 96zM48 128l288 0 0-48-288 0 0 48z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tErgonomic Office Chair Supplier &#8211; Designed for B2B office chair sourcing and project supply.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 384 512\"><path fill=\"currentColor\" d=\"M384 176l-65.3 0 26 285.8 1.6 18.2-48.2 0-1.3-13.8-13.3-146.2-183.1 0-13.3 146.2-1.2 13.8-48.2 0 1.6-18.2 26-285.8-65.3 0 0-144 384 0 0 144zM104.8 272l174.3 0-8.7-96-156.9 0-8.7 96zM48 128l288 0 0-48-288 0 0 48z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t4D Lumbar Support &#8211; 4-direction lumbar adjustment supports different sitting needs.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 384 512\"><path fill=\"currentColor\" d=\"M384 176l-65.3 0 26 285.8 1.6 18.2-48.2 0-1.3-13.8-13.3-146.2-183.1 0-13.3 146.2-1.2 13.8-48.2 0 1.6-18.2 26-285.8-65.3 0 0-144 384 0 0 144zM104.8 272l174.3 0-8.7-96-156.9 0-8.7 96zM48 128l288 0 0-48-288 0 0 48z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t2D Headrest and Flip-Up Arms &#8211; Practical comfort features for office users.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 384 512\"><path fill=\"currentColor\" d=\"M384 176l-65.3 0 26 285.8 1.6 18.2-48.2 0-1.3-13.8-13.3-146.2-183.1 0-13.3 146.2-1.2 13.8-48.2 0 1.6-18.2 26-285.8-65.3 0 0-144 384 0 0 144zM104.8 272l174.3 0-8.7-96-156.9 0-8.7 96zM48 128l288 0 0-48-288 0 0 48z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tWholesale Loading Data &#8211; MOQ 100 pcs, 504 pcs\/40HQ loading.\n\t\t\t\t\t\t\t\t\t<\/li>\n<\/ul>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><\/p>\n<p><strong>Ideal para:<\/strong> 777 fits office furniture distributors, project buyers, importers, corporate offices, coworking spaces, manager rooms, and mid-level ergonomic office chair programs.<\/p>\n<p><strong>Notas sobre la decisi\u00f3n del comprador:<\/strong> Choose this model when your market needs visible lumbar adjustment, 2D headrest comfort, flip-up armrest function, and better ergonomic positioning without moving into a heavier premium chair. Compare <a href=\"https:\/\/hengyaochair.com\/es\/producto\/779-3d-flip-up-armrest-office-chair-mesh-ergonomic\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla 779<\/a> for 3D armrest positioning, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/998-height-adjustable-mesh-office-chair-high-back\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla con respaldo alto 998-B<\/a> for a taller back profile, and <a href=\"https:\/\/hengyaochair.com\/es\/producto\/777-2-budget-mesh-office-chair-wholesale-716pcs-40hq\/\" target=\"_blank\" rel=\"noopener\">777-2<\/a> for higher loading efficiency.<\/p>\n<h2>Especificaciones b\u00e1sicas de la silla de oficina 777<\/h2>\n<table>\n<tbody>\n<tr>\n<td>Modelo<\/td>\n<td>777<\/td>\n<td>Tipo de producto<\/td>\n<td>Silla de oficina ergon\u00f3mica de malla<\/td>\n<\/tr>\n<tr>\n<td>Tejido<\/td>\n<td>Malla<\/td>\n<td>Marco<\/td>\n<td>Pl\u00e1stico del respaldo y el asiento<\/td>\n<\/tr>\n<tr>\n<td>Reposabrazos<\/td>\n<td>Reposabrazos abatibles<\/td>\n<td>Lumbar<\/td>\n<td>Apoyo lumbar ajustable en 4 direcciones<\/td>\n<\/tr>\n<tr>\n<td>Reposacabezas<\/td>\n<td>2D Adjustable Headrest<\/td>\n<td>Mecanismo<\/td>\n<td>17 Mariposa<\/td>\n<\/tr>\n<tr>\n<td>Elevador de gas<\/td>\n<td>3# 100 mm<\/td>\n<td>Base<\/td>\n<td>330 A# PP Base<\/td>\n<\/tr>\n<tr>\n<td>Ruedas<\/td>\n<td>Ruedas de PU A#<\/td>\n<td>Tama\u00f1o del embalaje<\/td>\n<td>64 x 30 x 60,5 cm<\/td>\n<\/tr>\n<tr>\n<td>Cantidad m\u00ednima de pedido<\/td>\n<td>100 unidades<\/td>\n<td>Carga de un contenedor 40HQ<\/td>\n<td>504 unidades<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>777 Features &#8211; 4D Lumbar Support, Flip-Up Arms, 2D Headrest<\/h2>\n<ul>\n<li>\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t4D Lumbar Support &#8211; 4-direction lumbar adjustment gives distributors a clear ergonomic selling point.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tPractical Headrest and Armrests &#8211; 2D adjustable headrest and flip-up armrests support daily office use.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tReliable Mid-Level Configuration &#8211; 17 butterfly mechanism, 3# gas lift, PP base, and PU castors provide a balanced structure.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tWholesale Order Planning &#8211; MOQ 100 pcs and 504 pcs\/40HQ help importers plan purchasing and freight cost.\n\t\t\t\t\t\t\t\t\t<\/li>\n<li>\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\tOffice Chair Supplier Support &#8211; Hengyao supports OEM options, carton design, branding, and B2B supply.\n\t\t\t\t\t\t\t\t\t<\/li>\n<\/ul>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-flip-up-armrest-mesh-chair-feature.webp\" alt=\"777-reposabrazos-abatible-silla-de-malla-caracter\u00edsticas\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-flip-up-armrest-mesh-chair-feature.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-flip-up-armrest-mesh-chair-feature-768x768.webp 768w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-4d-lumbar-support-chair-feature.webp\" alt=\"Silla de oficina modelo 777 con soporte lumbar ajustable en 4 dimensiones\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-4d-lumbar-support-chair-feature.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/06\/777-4d-lumbar-support-chair-feature-768x768.webp 768w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h2>Certificados, pruebas y registros de compradores<\/h2>\n<p>\t\tFor model 777 bulk orders, buyers can review sample approval notes, appearance checks, lumbar and headrest function, armrest fitting, gas lift movement, mechanism stability, packing photos, labels, spare parts, and shipment documentation. Third-party testing can be arranged for qualified orders according to buyer requirements.\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/china-luxurious-bar-stool-test.webp\" alt=\"Informe de pruebas de calidad de sillas de mobiliario para pedidos de fabricaci\u00f3n por encargo y de exportaci\u00f3n\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/Level-2-air-cylinder-test.webp\" alt=\"Informe de pruebas del sistema de elevaci\u00f3n neum\u00e1tica de nivel 2 para la producci\u00f3n al por mayor de sillas\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/luxurious-bar-stool-test.webp\" alt=\"Informe de pruebas de calidad de sillas de mobiliario para pedidos de fabricaci\u00f3n por encargo y de exportaci\u00f3n\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/luxurious-bar-stool-SGS-test.webp\" alt=\"Informe de ensayo de SGS sobre sillas para los compradores mayoristas de Hengyao Chair\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/Test-of-European-Luxury-Modern-Bar-stool.webp\" alt=\"Informe de ensayo de sillas de mobiliario seg\u00fan la norma europea para compradores de exportaci\u00f3n\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"700\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/Testing-of-Spanish-air-hoses-for-export.webp\" alt=\"Informe de ensayo de los cilindros de gas y los componentes de las sillas para pedidos de exportaci\u00f3n\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<section>\n<style>\n    .hy-video-evidence{max-width:1180px;margin:52px auto;padding:42px 22px;background:#f7f9fc;border:1px solid #dde5ef;font-family:inherit}\n    .hy-video-evidence .hy-eyebrow{font-size:13px;line-height:1.2;font-weight:800;letter-spacing:0;text-transform:uppercase;color:#bc272d;margin:0 0 10px}\n    .hy-video-evidence h2{font-size:34px;line-height:1.18;margin:0 0 14px;color:#111827;letter-spacing:0}\n    .hy-video-evidence .hy-intro{max-width:920px;font-size:17px;line-height:1.68;color:#384454;margin:0 0 24px}\n    .hy-test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 28px}\n    .hy-test-pill{background:#fff;border-left:4px solid #bc272d;padding:17px 18px;box-shadow:0 8px 18px rgba(26,38,61,.06)}\n    .hy-test-pill strong{display:block;color:#111827;font-size:16px;margin:0 0 7px}\n    .hy-test-pill span{display:block;color:#4b5563;font-size:14px;line-height:1.55}\n    .hy-video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}\n    .hy-video-card{background:#fff;border:1px solid #dbe3ef;overflow:hidden;box-shadow:0 12px 28px rgba(16,24,40,.08)}\n    .hy-video-frame{position:relative;width:100%;aspect-ratio:9\/16;background:#111827}\n    .hy-video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}\n    .hy-video-copy{padding:18px 18px 20px}\n    .hy-video-copy h3{font-size:18px;line-height:1.28;margin:0 0 8px;color:#111827;letter-spacing:0}\n    .hy-video-copy p{font-size:14.5px;line-height:1.58;margin:0;color:#4b5563}\n    .hy-video-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:26px}\n    .hy-video-actions a{display:inline-flex;align-items:center;justify-content:center;background:#bc272d;color:#fff;text-decoration:none;font-weight:800;padding:12px 18px;border-radius:2px}\n    .hy-video-actions span{font-size:14px;color:#526070;line-height:1.5}\n    @media(max-width:900px){.hy-video-evidence{margin:34px 14px;padding:32px 16px}.hy-video-evidence h2{font-size:27px}.hy-test-grid,.hy-video-grid{grid-template-columns:1fr}.hy-video-frame{max-height:620px}}\n  <\/style>\n<p>Model 777 Buyer Evidence<\/p>\n<h2>777 Bulk Order Reliability Checks<\/h2>\n<p>Model 777 buyers can review factory testing videos and request project-specific inspection records before mass production. For ergonomic office chairs, the key risks are lumbar adjustment failure, loose mechanism movement, unstable base fitting, and sample-to-bulk inconsistency.<\/p>\n<p>  <strong>Load &#038; Structure Check<\/strong>Frame, base, gas lift, mechanism, and key load-bearing parts can be checked before shipment to reduce bulk-order failure risk.<br \/>\n<strong>Function Durability Check<\/strong>Recline movement, height adjustment, armrest fitting, caster rolling, and assembly points are reviewed for repeated commercial use.<br \/>\n<strong>Third-Party Testing Support<\/strong>For qualified bulk orders, third-party testing can be arranged according to buyer requirements, including BIFMA, EN, SGS, or other applicable standards.<\/p>\n<article>\n            <iframe title=\"777 Bulk Order Reliability Checks\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/AIDHCx2gH7o\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h3>Material &#038; Structure Check<\/h3>\n<p>Review real factory testing context for chair material comparison, structure control, and bulk-order reliability before sample approval.<\/p>\n<\/article>\n<article>\n            <iframe title=\"777 Bulk Order Reliability Checks\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/6Mh5DMIyHGs\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h3>Function &#038; Equipment Check<\/h3>\n<p>Use factory test clips to discuss mechanism movement, adjustment parts, and daily-use risks with the Hengyao Chair team.<\/p>\n<\/article>\n<article>\n            <iframe title=\"777 Bulk Order Reliability Checks\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/0UGAvbF6fMs\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h3>Inspection Evidence for Buyers<\/h3>\n<p>Ask for recent production, testing, packing, and loading records for similar chair orders before confirming mass production.<\/p>\n<\/article>\n<p>    <a href=\"https:\/\/hengyaochair.com\/es\/contacto\/\" target=\"_blank\" rel=\"noopener\">Get 777 Test &#038; Packing Records<\/a><br \/>\n    Send your chair category, model number, target quantity, and destination market. We can share relevant production, testing, packing, and loading records for similar orders.<br \/>\n<\/section>\n<section>\n<style>\n    .hy777-procurement-20260819{max-width:1180px;margin:54px auto;padding:0 18px;font-family:inherit;color:#162033}\n    .hy777-procurement-20260819 .hy777-wrap{display:grid;grid-template-columns:0.92fr 1.18fr;gap:0;border:1px solid #dde3ea;background:#fff}\n    .hy777-procurement-20260819 .hy777-left{background:#f5f7fa;padding:34px 34px 30px;border-right:1px solid #dde3ea}\n    .hy777-procurement-20260819 .hy777-kicker{display:inline-block;margin:0 0 12px;color:#bc272d;font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:0}\n    .hy777-procurement-20260819 h2{margin:0 0 14px;font-size:32px;line-height:1.18;color:#101828;letter-spacing:0}\n    .hy777-procurement-20260819 p{margin:0;color:#344054;line-height:1.68;font-size:16px}\n    .hy777-procurement-20260819 .hy777-links{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}\n    .hy777-procurement-20260819 .hy777-links a{display:inline-flex;align-items:center;padding:9px 12px;border:1px solid #cfd8e3;color:#bc272d;text-decoration:none;font-weight:700;background:#fff;font-size:14px}\n    .hy777-procurement-20260819 .hy777-right{padding:30px 30px 28px}\n    .hy777-procurement-20260819 .hy777-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}\n    .hy777-procurement-20260819 .hy777-card{border-left:4px solid #bc272d;background:#fff;padding:18px 18px 16px;box-shadow:0 8px 20px rgba(16,24,40,.07)}\n    .hy777-procurement-20260819 .hy777-card h3{margin:0 0 8px;font-size:18px;line-height:1.28;color:#101828;letter-spacing:0}\n    .hy777-procurement-20260819 .hy777-card p{font-size:14.5px;color:#475467;line-height:1.62}\n    .hy777-procurement-20260819 .hy777-checkbar{grid-column:1\/-1;margin-top:4px;background:#101828;color:#fff;padding:22px 24px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}\n    .hy777-procurement-20260819 .hy777-checkbar strong{display:block;font-size:15px;margin-bottom:6px;color:#fff}\n    .hy777-procurement-20260819 .hy777-checkbar span{display:block;font-size:13.5px;line-height:1.55;color:#d8dee8}\n    .hy777-procurement-20260819 .hy777-note{grid-column:1\/-1;margin-top:6px;padding:16px 18px;background:#fff7f7;border:1px solid #f1c6c9;color:#344054;line-height:1.65;font-size:15px}\n    .hy777-procurement-20260819 .hy777-note a{color:#bc272d;font-weight:800;text-decoration:none}\n    @media(max-width:900px){.hy777-procurement-20260819 .hy777-wrap{grid-template-columns:1fr}.hy777-procurement-20260819 .hy777-left{border-right:0;border-bottom:1px solid #dde3ea}}\n    @media(max-width:680px){.hy777-procurement-20260819 h2{font-size:25px}.hy777-procurement-20260819 .hy777-left,.hy777-procurement-20260819 .hy777-right{padding:24px 18px}.hy777-procurement-20260819 .hy777-grid,.hy777-procurement-20260819 .hy777-checkbar{grid-template-columns:1fr}}\n  <\/style>\n<p>      B2B Buyer Decision<\/p>\n<h2>777 Office Chair Bulk Order Fit<\/h2>\n<p>Model 777 is best for buyers who need an ergonomic mesh office chair with a clear lumbar-support story, practical wholesale pricing, and enough comfort features for corporate offices, coworking spaces, manager rooms, and distributor catalogs.<\/p>\n<p>        <a href=\"https:\/\/hengyaochair.com\/es\/office-chair\/\" target=\"_blank\" rel=\"noopener\">Office Chair Category<\/a><br \/>\n        <a href=\"https:\/\/hengyaochair.com\/es\/lista-de-comprobacion-para-compradores-b2b-sobre-problemas-de-calidad-en-las-sillas-de-oficina\/\" target=\"_blank\" rel=\"noopener\">Quality Issues Checklist<\/a><br \/>\n        <a href=\"https:\/\/hengyaochair.com\/es\/contacto\/\" target=\"_blank\" rel=\"noopener\">Request 777 Quote<\/a><\/p>\n<h3>Best-Fit Buyers<\/h3>\n<p>Office furniture distributors, project buyers, importers, corporate furniture programs, coworking suppliers, and online sellers needing a mid-to-high ergonomic mesh chair SKU.<\/p>\n<h3>What Makes It Different<\/h3>\n<p>777 should be sold around 4D lumbar support, breathable mesh, headrest support, flip-up armrests, 504 pcs \/ 40HQ loading, and sample-to-bulk consistency checks.<\/p>\n<h3>Before Sample Approval<\/h3>\n<p>Check lumbar movement, mesh tension, seat support, armrest fixing, gas lift movement, mechanism stability, caster rolling, screw matching, and assembly instructions.<\/p>\n<h3>Before Shipment<\/h3>\n<p>Confirm carton strength, inner protection, labels, spare parts, destination-market documents, packing photos, and whether third-party testing is needed for your order.<\/p>\n<p>          <strong>Durability Check<\/strong>Review repeated adjustment points, seat support, frame fitting, and component stability before mass production.<br \/>\n          <strong>Safety Check<\/strong>Gas lift, base, caster, mechanism, screw and assembly parts should be checked against the approved sample and buyer requirement.<br \/>\n          <strong>Stability Check<\/strong>Bulk orders should keep consistent sitting feel, mesh tension, carton protection, labels and spare parts from batch to batch.<br \/>\n        <strong>Buyer note:<\/strong> send model 777, quantity, destination market, target price level, color or logo request, and packing requirement. Hengyao Chair can discuss product specs, sample checks, packing details, and third-party testing arrangements for qualified bulk orders. Compare with <a href=\"https:\/\/hengyaochair.com\/es\/producto\/779-3d-flip-up-armrest-office-chair-mesh-ergonomic\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla 779<\/a> o <a href=\"https:\/\/hengyaochair.com\/es\/producto\/silla-de-oficina-ergonomica-de-malla-999-venta-al-por-mayor-con-reposacabezas-3d\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina ergon\u00f3mica de malla 999<\/a> if your market needs a different function position.<br \/>\n<\/section>\n<h2>Por qu\u00e9 los compradores mayoristas eligen el Modelo 777<\/h2>\n<p>Model 777 is useful when buyers need a mesh office chair with a visible ergonomic selling point. The value is not only the 4-direction lumbar support, 2D headrest, flip-up arms, and breathable mesh. The real B2B question is whether these adjustable parts feel stable after repeated daily use.<\/p>\n<p>Before sample approval, check lumbar movement, mesh rebound, headrest fitting, armrest screw matching, gas lift movement, PP base balance, PU caster rolling, manual clarity, and carton protection. Buyers can compare <a href=\"https:\/\/hengyaochair.com\/es\/producto\/779-3d-flip-up-armrest-office-chair-mesh-ergonomic\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla 779<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/fabricante-de-sillas-de-oficina-de-malla-998-con-asiento-de-espuma-moldeada\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina 998-A con malla de espuma moldeada<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/998-height-adjustable-mesh-office-chair-high-back\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla con respaldo alto 998-B<\/a>, y <a href=\"https:\/\/hengyaochair.com\/es\/producto\/silla-de-oficina-ergonomica-de-malla-999-venta-al-por-mayor-con-reposacabezas-3d\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina ergon\u00f3mica de malla 999<\/a>.<\/p>\n<p>\t\t\tA\u00f1os de experiencia en el sector<br \/>\n\t\t\t\t0<br \/>\n\t\t\tEquipos totalmente autom\u00e1ticos<br \/>\n\t\t\t\t0<br \/>\n\t\t\tpersonal de f\u00e1brica<br \/>\n\t\t\t\t0<br \/>\n\t\t\tIngeniero de desarrollo de muestras<br \/>\n\t\t\t\t0<br \/>\n\t\t\tPersonal de control de calidad<br \/>\n\t\t\t\t0<br \/>\n\t\t\tPlazo de entrega de las muestras<br \/>\n\t\t\t\t0<br \/>\n\t\t\tEstablecer puntos de control de soporte<br \/>\n\t\t\t\t0<br \/>\n\t\t\tPlazos de entrega de los pedidos<br \/>\n\t\t\t\t30-<br \/>\n\t\t\t\t0<br \/>\n\t\t\tCapacidad diaria de producci\u00f3n de sillas<br \/>\n\t\t\t\t0<br \/>\n\t\t\tventas anuales<br \/>\n\t\t\t\t0<br \/>\n\t\t\t\t+<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><\/p>\n<h2>Hengyao &#8211; Wholesale Office Chair Production Process<\/h2>\n<p>            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/Raw-materials-for-chair-blanks1.webp\" alt=\"Office chair metal tube material preparation\"><br \/>\n            1. Corte de tubos<br \/>\n            Metal tubes are prepared for the office chair frame and structural parts according to the confirmed sample and production drawing.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/drilling-hole1.webp\" alt=\"Office chair frame drilling process\"><br \/>\n            2. Perforaci\u00f3n<br \/>\n            Connection holes are processed for screws, armrest parts, mechanism fitting, and other assembly points that affect final chair stability.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/blending-tube1.webp\" alt=\"Office chair tube trimming and edge finishing\"><br \/>\n            3. Corte de tubos<br \/>\n            Edges and burrs are removed so frame parts fit more cleanly during welding, assembly, and final inspection.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/hand-welding1.webp\" alt=\"Proceso de soldadura del armaz\u00f3n de una silla de oficina\"><br \/>\n            4. Soldadura<br \/>\n            Las piezas del bastidor se sueldan siguiendo la estructura de la silla, lo que contribuye a mantener la estabilidad de las zonas clave que soportan la carga antes del tratamiento superficial.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/polishing1.webp\" alt=\"Pulido del armaz\u00f3n soldado de una silla de oficina\"><br \/>\n            5. Pulido<br \/>\n            Welded areas are polished to remove rough points and prepare the frame for coating and later assembly.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/cleaning-impurity1.webp\" alt=\"Limpieza del armaz\u00f3n de una silla de oficina antes del recubrimiento\"><br \/>\n            6. Limpieza de superficies<br \/>\n            The frame surface is cleaned before coating so the finish is more stable and easier to inspect.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/powder-coated1.webp\" alt=\"Recubrimiento en polvo del armaz\u00f3n de una silla de oficina\"><br \/>\n            7. Recubrimiento en polvo<br \/>\n            A protective coating is applied to the metal frame surface to improve appearance and basic surface protection.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/Paint-the-surface.1.webp\" alt=\"Office chair frame coating finish check\"><br \/>\n            8. Comprobaci\u00f3n final<br \/>\n            Se comprueba el marco recubierto en cuanto al acabado superficial, los defectos visibles, la uniformidad del color y su preparaci\u00f3n para el montaje.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/quality-inspection1.webp\" alt=\"Control de calidad de las sillas de oficina antes del embalaje\"><br \/>\n            9. Control de calidad<br \/>\n            Appearance, function, mechanism movement, armrest fitting, gas lift movement, and packing details are checked against the approved sample.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/Packaging-chairs1.webp\" alt=\"Proceso de embalaje para la exportaci\u00f3n de sillas de oficina\"><br \/>\n            10. Embalaje para la exportaci\u00f3n<br \/>\n            Las sillas de oficina se embalan con cajas de cart\u00f3n, materiales de protecci\u00f3n, kits de herrajes, etiquetas e instrucciones, seg\u00fan los requisitos del pedido.<br \/>\n            <img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/04\/Chair-delivery1.webp\" alt=\"Preparaci\u00f3n para la carga de contenedores con sillas de oficina\"><br \/>\n            11. Preparaci\u00f3n de la carga<br \/>\n            Las cajas de sillas de oficina terminadas se almacenan y se preparan para su env\u00edo una vez que se ha revisado el embalaje y se ha confirmado la documentaci\u00f3n del pedido.<\/p>\n<h2>Fabricante de productos totalmente personalizados<br \/>\n<\/h2>\n<p>Aprovisionamiento \u2013 toma de muestras \u2013 producci\u00f3n \u2013 control de calidad \u2013 embalaje para la exportaci\u00f3n \u2013 asistencia en la entrega para programas de sillas de oficina B2B.<\/p>\n<p>\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><\/p>\n<h2>How to Choose Model 777 for Ergonomic Mesh Office Chair Bulk Orders<\/h2>\n<p>Model 777 should be evaluated as a mid-level ergonomic mesh office chair for distributors and project buyers. It is stronger than a basic budget task chair because it adds 4-direction lumbar support, 2D headrest comfort, flip-up armrests, and 504 pcs\/40HQ loading.<\/p>\n<p>Before confirming a bulk order, check lumbar adjustment range, headrest height, mesh tension, seat support, armrest stability, 17 butterfly mechanism movement, 3# 100mm gas lift movement, PP base balance, PU caster rolling, carton protection, and sample-to-bulk consistency.<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-budget-mesh-office-chair-bulk-order-check-1.webp\" alt=\"777-2 budget mesh office chair bulk order stability check for wholesale buyers\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-budget-mesh-office-chair-bulk-order-check-1.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-budget-mesh-office-chair-bulk-order-check-1-768x768.webp 768w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-budget-mesh-office-chair-bulk-order-check-1-12x12.webp 12w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h3>Check 4-Direction Lumbar Movement and User Fit<\/h3>\n<p>The main reason to choose 777 is the 4-direction adjustable lumbar support. Buyers should check whether the lumbar part moves smoothly, holds position after adjustment, and supports different user heights without creating a hard pressure point.<\/p>\n<p>This matters for corporate offices, coworking spaces, training rooms, and distributor catalogs where end users compare comfort quickly. A sample that feels good for one person may still fail if the lumbar range is too limited for the target market.<\/p>\n<p>\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><\/p>\n<h3>Check 2D Headrest, Flip-Up Arms, and Daily Office Function<\/h3>\n<p>\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256c0 136.967-111.033 248-248 248S8 392.967 8 256 119.033 8 256 8s248 111.033 248 248zM227.314 387.314l184-184c6.248-6.248 6.248-16.379 0-22.627l-22.627-22.627c-6.248-6.249-16.379-6.249-22.628 0L216 308.118l-70.059-70.059c-6.248-6.248-16.379-6.248-22.628 0l-22.627 22.627c-6.248 6.248-6.248 16.379 0 22.627l104 104c6.249 6.249 16.379 6.249 22.628.001z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tReliable choice: stable 4D lumbar, 2D headrest, and flip-up armrests<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tFor ergonomic office chair orders, complaints often come from loose headrests, uneven armrests, weak lumbar movement, or adjustment parts that feel different from the sample. Ask for close-up function checks, sample notes, and pre-shipment videos before mass production.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm121.6 313.1c4.7 4.7 4.7 12.3 0 17L338 377.6c-4.7 4.7-12.3 4.7-17 0L256 312l-65.1 65.6c-4.7 4.7-12.3 4.7-17 0L134.4 338c-4.7-4.7-4.7-12.3 0-17l65.6-65-65.6-65.1c-4.7-4.7-4.7-12.3 0-17l39.6-39.6c4.7-4.7 12.3-4.7 17 0l65 65.7 65.1-65.6c4.7-4.7 12.3-4.7 17 0l39.6 39.6c4.7 4.7 4.7 12.3 0 17L312 256l65.6 65.1z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tAvoid pitfalls: weak lumbar hold, loose arms, unclear manuals, or poor packing<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tDo not judge 777 only by product photos. Check lumbar movement, 2D headrest fit, flip-up armrest alignment, 17 butterfly mechanism movement, gas lift travel, PP base balance, PU caster rolling, screw matching, carton marks, and spare parts before shipment.\t\t\t\t\t<\/p>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-mesh-back-seat-foam-lumbar-check-1.webp\" alt=\"Mesh back seat foam lumbar support and armrest check for 777-2 office chair\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-mesh-back-seat-foam-lumbar-check-1.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-mesh-back-seat-foam-lumbar-check-1-768x768.webp 768w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-mesh-back-seat-foam-lumbar-check-1-12x12.webp 12w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-gas-lift-reinforced-base-castor-inspection-1.webp\" alt=\"Gas lift reinforced base armrest and nylon castor inspection for 777-2 office chair\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-gas-lift-reinforced-base-castor-inspection-1.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-gas-lift-reinforced-base-castor-inspection-1-768x768.webp 768w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-gas-lift-reinforced-base-castor-inspection-1-12x12.webp 12w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h3>Check Mesh Tension, Seat Support, and Long-Hour Comfort<\/h3>\n<p>777 uses a 2D adjustable headrest, flip-up armrests, 17 butterfly mechanism, 3# 100mm gas lift, 330 A# PP base, and A# PU castors. Buyers should check these parts as one office seating system, not as separate feature names on a catalog page.<\/p>\n<p>Ask for close-up sample photos or short videos showing armrest movement, headrest adjustment, gas lift travel, mechanism movement, caster rolling, screw matching, and final assembly points. This reduces the risk of loose parts or inconsistent user feedback after delivery.<\/p>\n<p>\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tSolicita un presupuesto gratuito<br \/>\n\t\t\t\t\t<\/a><\/p>\n<h3>Check 504 pcs\/40HQ Loading, Carton Size, and Manual Clarity<\/h3>\n<p>For B2B pricing, confirm the 64 x 30 x 60.5 cm packing size, 504 pcs\/40HQ loading, carton strength, hardware kit, spare parts, labels, assembly manual, and inspection records before final quotation.<\/p>\n<p>Para la comparaci\u00f3n de modelos, v\u00e9ase <a href=\"https:\/\/hengyaochair.com\/es\/producto\/777-2-budget-mesh-office-chair-wholesale-716pcs-40hq\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla econ\u00f3mica 777-2<\/a> en el caso de los programas en los que el coste es un factor determinante, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/779-3d-flip-up-armrest-office-chair-mesh-ergonomic\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla 779<\/a> for 3D flip-up armrest positioning, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/fabricante-de-sillas-de-oficina-de-malla-998-con-asiento-de-espuma-moldeada\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina 998-A con malla de espuma moldeada<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/998-height-adjustable-mesh-office-chair-high-back\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla con respaldo alto 998-B<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/silla-de-oficina-ergonomica-de-malla-999-venta-al-por-mayor-con-reposacabezas-3d\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina ergon\u00f3mica de malla 999<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/999-1-reclining-mesh-office-chair-wholesale-fabric-seat\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina reclinable de malla 999-1<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/703-compact-fabric-office-chair-wholesale-flip-up-armrest\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina compacta de tela 703<\/a>, y el <a href=\"https:\/\/hengyaochair.com\/es\/office-chair\/\" target=\"_blank\" rel=\"noopener\">categor\u00eda de sillas de oficina<\/a>.<\/p>\n<p>\t\t\t\t\t\t\t\t<a href=\"#contactquote\"><br \/>\n\t\t\t\t\t\t\t\t\tAsk for 777 Ergonomic Office Chair Advice<br \/>\n\t\t\t\t\t<\/a><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-sample-approval-mechanism-packing-check-1.webp\" alt=\"777-2 office chair sample approval mechanism gas lift and packing check\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-sample-approval-mechanism-packing-check-1.webp 1254w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-sample-approval-mechanism-packing-check-1-768x768.webp 768w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/09\/777-2-sample-approval-mechanism-packing-check-1-12x12.webp 12w\" sizes=\"auto, (max-width: 1254px) 100vw, 1254px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h2>Aclara tus dudas y resuelve tus dificultades<\/h2>\n<p>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"1000\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/The-clients-concerns.webp\" alt=\"Las preocupaciones del cliente\" \/><br \/>\n\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 540 540\"><path fill=\"currentColor\" d=\"M425 70.1c10.1-10.3 23.9-16.1 38.3-16.1s28.2 5.6 38.4 15.8l22.5 22.5c21.1 21.1 21.1 55.3 0 76.4l-288 288c-21.1 21.1-55.3 21.1-76.4 0l-144-144c-21.1-21.1-21.1-55.3 0-76.4l22.5-22.5C48.6 203.6 62.5 197.9 77 198s28.3 6.1 38.4 16.5l70.2 72.8c7 7.3 18.7 7.3 25.8 .1L425 70.1zM463.5 108c5.2-5.3 5.2-13.9-.2-19.1s-13.9-5.2-19.1 .2L230.6 306.3c-8.9 9.1-20.7 13.5-32.5 13.4-7.5-.1-13.6 5.9-13.6 13.4s5.9 13.6 13.4 13.6c18.8 .2 37.7-7 52-21.5L463.5 108zM76.5 252c5.3-5.3 5.3-13.8 0-19.1s-13.8-5.3-19.1 0L34.9 255.4c-5.3 5.3-5.3 13.8 0 19.1s13.8 5.3 19.1 0L76.5 252z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\t\u00bfTe preocupan los problemas de liquidez relacionados con la compra de sillas al por mayor?<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tUna vez que nos convirtamos en socios a largo plazo, el plazo de pago ser\u00e1 de 90 d\u00edas y el saldo se abonar\u00e1 en el puerto. Ofrecemos una opci\u00f3n de pago a 90 d\u00edas tras una evaluaci\u00f3n financiera, lo que le ayudar\u00e1 a gestionar su flujo de caja de forma eficiente y a aliviar la presi\u00f3n financiera.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 540 540\"><path fill=\"currentColor\" d=\"M425 70.1c10.1-10.3 23.9-16.1 38.3-16.1s28.2 5.6 38.4 15.8l22.5 22.5c21.1 21.1 21.1 55.3 0 76.4l-288 288c-21.1 21.1-55.3 21.1-76.4 0l-144-144c-21.1-21.1-21.1-55.3 0-76.4l22.5-22.5C48.6 203.6 62.5 197.9 77 198s28.3 6.1 38.4 16.5l70.2 72.8c7 7.3 18.7 7.3 25.8 .1L425 70.1zM463.5 108c5.2-5.3 5.2-13.9-.2-19.1s-13.9-5.2-19.1 .2L230.6 306.3c-8.9 9.1-20.7 13.5-32.5 13.4-7.5-.1-13.6 5.9-13.6 13.4s5.9 13.6 13.4 13.6c18.8 .2 37.7-7 52-21.5L463.5 108zM76.5 252c5.3-5.3 5.3-13.8 0-19.1s-13.8-5.3-19.1 0L34.9 255.4c-5.3 5.3-5.3 13.8 0 19.1s13.8 5.3 19.1 0L76.5 252z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\t\u00bfTe preocupa perder clientes por problemas de calidad?<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tDefined QC checkpoints, sample confirmation, and documented packing requirements help buyers reduce bulk-order risk. Hengyao Chair supports material checks, function checks, carton review, and shipment communication before delivery.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 540 540\"><path fill=\"currentColor\" d=\"M425 70.1c10.1-10.3 23.9-16.1 38.3-16.1s28.2 5.6 38.4 15.8l22.5 22.5c21.1 21.1 21.1 55.3 0 76.4l-288 288c-21.1 21.1-55.3 21.1-76.4 0l-144-144c-21.1-21.1-21.1-55.3 0-76.4l22.5-22.5C48.6 203.6 62.5 197.9 77 198s28.3 6.1 38.4 16.5l70.2 72.8c7 7.3 18.7 7.3 25.8 .1L425 70.1zM463.5 108c5.2-5.3 5.2-13.9-.2-19.1s-13.9-5.2-19.1 .2L230.6 306.3c-8.9 9.1-20.7 13.5-32.5 13.4-7.5-.1-13.6 5.9-13.6 13.4s5.9 13.6 13.4 13.6c18.8 .2 37.7-7 52-21.5L463.5 108zM76.5 252c5.3-5.3 5.3-13.8 0-19.1s-13.8-5.3-19.1 0L34.9 255.4c-5.3 5.3-5.3 13.8 0 19.1s13.8 5.3 19.1 0L76.5 252z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tDo You Need Clear Loading Data for Mid-Level Mesh Chairs?<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\t777 includes a 504 pcs\/40HQ loading reference. Buyers can compare packing size, freight cost, landed cost, and mixed-model order planning before confirming an ergonomic mesh office chair program.\t\t\t\t\t<\/p>\n<h2>C\u00f3mo cuidar tu silla de oficina<\/h2>\n<p>Sigue esta gu\u00eda de mantenimiento para mantener la silla de oficina ergon\u00f3mica de malla 777 limpia, estable y en condiciones \u00f3ptimas para su uso diario en la oficina, en el puesto de trabajo, en la sala de direcci\u00f3n y en espacios de coworking.<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zm128-91.5L236.3 131l5.4-3 6.2 0 8 0 24 0 0 24 0 184 56 0 0 48-80 0-80 0 0-48 56 0 0-147.7L187.7 213 176 219.5l0-54.9z\"><\/path><path d=\"M256 48a208 208 0 1 1 0 416 208 208 0 1 1 0-416zm0 464A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM241.8 128l-5.4 3L176 164.5l0 54.9 11.7-6.5L232 188.3 232 336l-56 0 0 48 80 0 80 0 0-48-56 0 0-184 0-24-24 0-8 0-6.2 0z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tLimpieza peri\u00f3dica<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tLimpia la superficie de malla o tela con un pa\u00f1o suave o un limpiador adecuado para tejidos, y evita los productos qu\u00edmicos agresivos. En el caso de uso en oficinas comerciales, comprueba peri\u00f3dicamente el pist\u00f3n de gas, los tornillos, los reposabrazos, las ruedas y la uni\u00f3n de la base para garantizar la estabilidad de la silla de oficina durante su uso diario.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zm110.4-82.6l19.1-14.5 16.2-12.3c15.8-12 35.2-18.4 55.1-18.1l3.4 .1c46.5 .7 83.8 38.6 83.8 85.1l0 24-3.5 0c-4.2 14.4-12.3 27.6-23.5 38.1L244.7 336l83.3 0 24 0 0 48-24 0-144 0-24 0 0-34.4 7.6-7.1L276.3 240.6c7.5-7 11.7-16.8 11.7-27.1c0-20.3-16.3-36.8-36.6-37.1l-3.4-.1c-9.1-.1-18 2.8-25.3 8.3L206.5 197l-19.1 14.5-29.1-38.2z\"><\/path><path d=\"M256 48a208 208 0 1 1 0 416 208 208 0 1 1 0-416zm0 464A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM193.7 146.5l-16.2 12.3-19.1 14.5 29.1 38.2L206.5 197l16.2-12.3c7.2-5.5 16.1-8.4 25.3-8.3l3.4 .1c20.3 .3 36.6 16.8 36.6 37.1c0 10.3-4.2 20.1-11.7 27.1L167.6 342.5l-7.6 7.1 0 34.4 24 0 144 0 24 0 0-48-24 0-83.3 0 64.4-60.4c11.2-10.5 19.2-23.7 23.5-38.1l3.5 0 0-24c0-46.5-37.3-84.4-83.8-85.1l-3.4-.1c-19.9-.3-39.3 6.1-55.1 18.1z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tRevisa peri\u00f3dicamente los tornillos de fijaci\u00f3n<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tOver time, the screws might loosen. So, let&#8217;s check if they are loose.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zM160 128l24 0 128 0 24 0 0 34.6-7.8 7.1-50.8 46.5c41.9 4.8 74.6 40.4 74.6 83.6l0 24-3.5 0C338.2 358.6 306 384 267.8 384l-25.2 0c-32.2 0-61.6-18.2-76-47l-4.2-8.3 42.9-21.5 4.2 8.3c6.3 12.5 19.1 20.4 33 20.4l25.2 0c20 0 36.2-16.2 36.2-36.2c0-20.1-16.3-36.3-36.4-36.2l-51.5 .3-24.1 .1 0-34.7 7.8-7.1L250.3 176 184 176l-24 0 0-48z\"><\/path><path d=\"M256 48a208 208 0 1 1 0 416 208 208 0 1 1 0-416zm0 464A256 256 0 1 0 256 0a256 256 0 1 0 0 512zm56-384l-128 0-24 0 0 48 24 0 66.3 0-50.5 46.3-7.8 7.1 0 34.7 24.1-.1 51.5-.3c20.1-.1 36.4 16.1 36.4 36.2c0 20-16.2 36.2-36.2 36.2l-25.2 0c-14 0-26.8-7.9-33-20.4l-4.2-8.3-42.9 21.5 4.2 8.3c14.4 28.8 43.8 47 76 47l25.2 0c38.1 0 70.3-25.4 80.7-60.2l3.5 0 0-24c0-43.3-32.6-78.9-74.6-83.6l50.8-46.5 7.8-7.1 0-34.6-24 0z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tEvita la luz solar directa<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tProlonged direct sunlight may fade mesh or fabric surfaces. For showrooms or project sites, keep chairs away from long direct sunlight where possible.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zm96.4 64l8.5-30.4L197.8 128l49.8 0-40 144 64.4 0 0-56 0-24 48 0 0 24 0 56 8 0 24 0 0 48-24 0-8 0 0 40 0 24-48 0 0-24 0-40-96 0-31.6 0z\"><\/path><path d=\"M464 256A208 208 0 1 0 48 256a208 208 0 1 0 416 0zM0 256a256 256 0 1 1 512 0A256 256 0 1 1 0 256zm320-64l0 24 0 56 8 0 24 0 0 48-24 0-8 0 0 40 0 24-48 0 0-24 0-40-96 0-31.6 0 8.5-30.4L197.8 128l49.8 0-40 144 64.4 0 0-56 0-24 48 0z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tEl uso adecuado de la silla de oficina<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tUtiliza la silla \u00fanicamente para el trabajo de oficina habitual en posici\u00f3n sentada. No te subas a la silla, no te sientes en los reposabrazos, no saltes sobre el asiento, no sobrecargues el mecanismo ni utilices la silla como escalera.\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zm114.9 75.4l42.3-22.7 5.4 10c5.7 10.7 16.9 17.3 29 17.3l33 0c17.4 0 31.5-14.1 31.5-31.5c0-15.9-11.9-29.3-27.7-31.2l-79.1-9.5L174 261.1l2.1-23.2 8-88 2-21.8 21.9 0 104 0 24 0 0 48-24 0-82.1 0L226 218.9l56 6.7c39.9 4.8 70 38.7 70 78.9l0 24-3.7 0c-10.2 32.2-40.2 55.5-75.8 55.5l-33 0c-29.8 0-57.1-16.4-71.2-42.6l-5.4-10z\"><\/path><path d=\"M256 48a208 208 0 1 1 0 416 208 208 0 1 1 0-416zm0 464A256 256 0 1 0 256 0a256 256 0 1 0 0 512zM208 128l-21.9 0-2 21.8-8 88L174 261.1l23.2 2.8 79.1 9.5c15.8 1.9 27.7 15.3 27.7 31.2c0 17.4-14.1 31.5-31.5 31.5l-33 0c-12.1 0-23.2-6.7-29-17.3l-5.4-10-42.3 22.7 5.4 10c14.1 26.2 41.5 42.6 71.2 42.6l33 0c35.5 0 65.6-23.3 75.8-55.5l3.7 0 0-24c0-40.2-30.1-74.1-70-78.9l-56-6.7 3.9-42.9 82.1 0 24 0 0-48-24 0-104 0z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tMantenimiento de la funci\u00f3n de elevaci\u00f3n y rotaci\u00f3n<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tEvery month, apply a small amount of silicone-based lubricant (do not use engine oil) at the rotating shaft and the pedal ring to ensure smooth operation.<br \/>\nAvoid frequent violent lifting and lowering, and single-point heavy pressure to prevent damage to the air pressure rods.\n\t\t\t\t\t<\/p>\n<p>\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><defs><\/p>\n<style>.fa-secondary{opacity:.4}<\/style>\n<p><\/defs><path d=\"M48 256a208 208 0 1 0 416 0A208 208 0 1 0 48 256zm112 32c0-31.7 11.9-62.3 33.3-85.7L261.4 128l65.1 0-14.9 16.2-44.4 48.4C315 198.2 352 238.8 352 288c0 53-43 96-96 96s-96-43-96-96zm48 0a48 48 0 1 0 96 0 48 48 0 1 0 -96 0z\"><\/path><path d=\"M464 256A208 208 0 1 0 48 256a208 208 0 1 0 416 0zM0 256a256 256 0 1 1 512 0A256 256 0 1 1 0 256zm256 80a48 48 0 1 0 0-96 48 48 0 1 0 0 96zm-96-48c0-31.7 11.9-62.3 33.3-85.7L261.4 128l65.1 0-14.9 16.2-44.4 48.4C315 198.2 352 238.8 352 288c0 53-43 96-96 96s-96-43-96-96z\"><\/path><\/svg>\t\t\t\t<\/p>\n<h3>\n\t\t\t\t\t\t\tMetal (forja \/ acero inoxidable \/ galvanizado)<br \/>\n\t\t\t\t\t<\/h3>\n<p>\n\t\t\t\t\t\tDry off the water stains. In damp environments, apply a thin layer of anti-rust oil \/ sewing oil regularly.<br \/>\nRemove rust: For small rust spots, soak them in oil and then wipe them off. For severe rust, seek professional treatment.\n\t\t\t\t\t<\/p>\n<h2>Un socio de confianza para sillas de oficina<br \/>\n<\/h2>\n<p>\t\tHengyao Chair ofrece sillas de oficina directamente de f\u00e1brica y soluciones de asientos a medida para importadores, distribuidores, marcas de mobiliario de oficina, contratistas de proyectos, minoristas y compradores de espacios de trabajo comerciales.\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1000\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-1.webp\" alt=\"Referencia de clientes de Hengyao Chair para compradores de muebles en el extranjero\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-1.webp 1024w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-1-768x750.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h5>\n\t\t\t\t\t\t\tDavid Thomas<br \/>\n\t\t\t\t\t<\/h5>\n<p>\n\t\t\t\t\t\tFilipinas  \t\t\t\t\t<\/p>\n<p>\t\t\t\tFor B2B buyers, assembly instructions should be checked before shipment. Ask for a clear manual, hardware-kit list, carton label sample, and spare-parts plan before confirming bulk office chair orders.\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-2.webp\" alt=\"Referencia de clientes de Hengyao Chair para compradores de muebles en el extranjero\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-2.webp 1024w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-2-768x768.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h5>\n\t\t\t\t\t\t\tIsabella Jackson<br \/>\n\t\t\t\t\t<\/h5>\n<p>\n\t\t\t\t\t\tAustralia  \t\t\t\t\t<\/p>\n<p>\t\t\t\tBefore shipment, confirm the commercial invoice, packing list, carton marks, loading photos, and destination-market document requirements. Clear document responsibility helps buyers avoid customs and receiving delays.\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1000\" src=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-3.webp\" alt=\"Referencia de clientes de Hengyao Chair para compradores de muebles en el extranjero\" srcset=\"https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-3.webp 1024w, https:\/\/hengyaochair.com\/wp-content\/uploads\/2026\/04\/client-3-768x750.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<h5>\n\t\t\t\t\t\t\tMichael Kingston<br \/>\n\t\t\t\t\t<\/h5>\n<p>\n\t\t\t\t\t\tEspa\u00f1a  \t\t\t\t\t<\/p>\n<p>\t\t\t\tProveedor fiable de sillas de oficina al por mayor\t\t\t<\/p>\n<h2>Preguntas frecuentes<\/h2>\n<p>\t\tHere are common questions buyers ask before ordering model 777 office chairs in bulk. Related comparison paths: <a href=\"https:\/\/hengyaochair.com\/es\/office-chair\/\" target=\"_blank\" rel=\"noopener\">categor\u00eda de sillas de oficina<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/777-2-budget-mesh-office-chair-wholesale-716pcs-40hq\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla econ\u00f3mica 777-2<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/779-3d-flip-up-armrest-office-chair-mesh-ergonomic\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla 779<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/fabricante-de-sillas-de-oficina-de-malla-998-con-asiento-de-espuma-moldeada\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina 998-A con malla de espuma moldeada<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/998-height-adjustable-mesh-office-chair-high-back\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina de malla con respaldo alto 998-B<\/a>, <a href=\"https:\/\/hengyaochair.com\/es\/producto\/silla-de-oficina-ergonomica-de-malla-999-venta-al-por-mayor-con-reposacabezas-3d\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina ergon\u00f3mica de malla 999<\/a>, y <a href=\"https:\/\/hengyaochair.com\/es\/producto\/703-compact-fabric-office-chair-wholesale-flip-up-armrest\/\" target=\"_blank\" rel=\"noopener\">Silla de oficina compacta de tela 703<\/a>.\t\t\t\t\t<\/p>\n<details id=\"e-n-accordion-item-1410\" >\n<summary data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1410\" >\n\t\t\t\t\t \u00bfCu\u00e1l es el principal punto fuerte del modelo 777?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tThe main selling point is 4-direction adjustable lumbar support, supported by 2D headrest comfort, flip-up armrests, 17 butterfly mechanism, 3# 100mm gas lift, PP base, PU castors, and 504 pcs\/40HQ loading reference.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1411\" >\n<summary data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1411\" >\n\t\t\t\t\t \u00bfCu\u00e1l es la capacidad del 40HQ?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tModel 777 supports 504 pcs per 40HQ container under the current packing plan, based on a 64 x 30 x 60.5 cm packing size. Buyers should confirm carton strength, hardware kits, labels, and loading plan before shipment.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1412\" >\n<summary data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1412\" >\n\t\t\t\t\t \u00bfQui\u00e9n deber\u00eda adquirir el modelo 777?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tEs ideal para distribuidores de mobiliario de oficina, compradores para proyectos, importadores y proveedores mayoristas de sillas de oficina.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1413\" >\n<summary data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1413\" >\n\t\t\t\t\t \u00bfD\u00f3nde se puede utilizar el 777?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tModel 777 fits corporate offices, manager rooms, coworking spaces, training rooms, office furniture distributor programs, and B2B project seating orders that need a clear ergonomic support story.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1414\" >\n<summary data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1414\" >\n\t\t\t\t\t \u00bfQu\u00e9 materiales se utilizan para fabricar el 777?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tModel 777 uses mesh fabric, back + seat plastic frame, flip-up armrests, 4-direction adjustable lumbar support, 2D adjustable headrest, 17 butterfly mechanism, 3# 100mm gas lift, 330 A# PP base, A# PU castors, 64 x 30 x 60.5 cm packing size, and 504 pcs\/40HQ loading reference.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1415\" >\n<summary data-accordion-index=\"6\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1415\" >\n\t\t\t\t\t \u00bfPor qu\u00e9 elegir a Hengyao como proveedor mayorista de sillas de oficina?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tHengyao Chair is a China office chair supplier focused on ergonomic mesh office chairs, sample confirmation, OEM\/ODM discussion, packing review, and export-ready seating supply.<br \/>\n\t\t\t\t\t<\/details>\n<details id=\"e-n-accordion-item-1416\" >\n<summary data-accordion-index=\"7\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1416\" >\n\t\t\t\t\t \u00bfQu\u00e9 condiciones de pago y env\u00edo se aplican?<br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><br \/>\n\t\t\t<svg aria-hidden=\"true\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t<\/summary>\n<p>\t\t\t\t\t\t\t\t\tFor 777 orders, buyers can discuss target quantity, sample confirmation, lumbar support requirements, packing details, carton labels, shipment documents, FOB Shanghai or Ningbo options, and spare-parts support before bulk production.<br \/>\n\t\t\t\t\t<\/details>\n<p>\t\t\t\tThe main selling point is 4-direction adjustable lumbar support, supported by 2D headrest comfort, flip-up armrests, 17 butterfly mechanism, 3# 100mm gas lift, PP base, PU castors, and 504 pcs\/40HQ loading reference.Model 777 supports 504 pcs per 40HQ container under the current packing plan, based on a 64 x 30 x 60.5 cm packing size. Buyers should confirm carton strength, hardware kits, labels, and loading plan before shipment.It is suitable for office furniture distributors, project buyers, importers, and wholesale office chair suppliers.Model 777 fits corporate offices, manager rooms, coworking spaces, training rooms, office furniture distributor programs, and B2B project seating orders that need a clear ergonomic support story.Model 777 uses mesh fabric, back + seat plastic frame, flip-up armrests, 4-direction adjustable lumbar support, 2D adjustable headrest, 17 butterfly mechanism, 3# 100mm gas lift, 330 A# PP base, A# PU castors, 64 x 30 x 60.5 cm packing size, and 504 pcs\/40HQ loading reference.Hengyao Chair is a China office chair supplier focused on ergonomic mesh office chairs, sample confirmation, OEM\/ODM discussion, packing review, and export-ready seating supply.For 777 orders, buyers can discuss target quantity, sample confirmation, lumbar support requirements, packing details, carton labels, shipment documents, FOB Shanghai or Ningbo options, and spare-parts support before bulk production.\t\t\t<\/p>\n<h2 style=\"margin:0 0 12px;font-size:26px;line-height:1.25;color:#111;\">P\u00e1ginas relacionadas con el abastecimiento para compradores B2B<\/h2>\n<p style=\"margin:0 0 16px;color:#333;font-size:16px;line-height:1.65;\">Antes de comparar muestras o confirmar un pedido al por mayor, consulta estas p\u00e1ginas relacionadas con las sillas Hengyao para conocer la categor\u00eda m\u00e1s amplia de sillas de oficina, las preguntas de los compradores, el contexto del proyecto y el proceso de solicitud de presupuesto.<\/p>\n<ul style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px 22px;margin:0;padding-left:20px;color:#222;font-size:16px;line-height:1.55;\">\n<li><a href=\"https:\/\/hengyaochair.com\/es\/office-chair\/\" target=\"_blank\" rel=\"noopener\">Comparativa de categor\u00edas y modelos de sillas de oficina<\/a><\/li>\n<li><a href=\"https:\/\/hengyaochair.com\/es\/lista-de-comprobacion-para-compradores-b2b-sobre-problemas-de-calidad-en-las-sillas-de-oficina\/\" target=\"_blank\" rel=\"noopener\">Lista de comprobaci\u00f3n de la calidad de las sillas de oficina<\/a><\/li>\n<li><a href=\"https:\/\/hengyaochair.com\/es\/caso-de-proyectos\/caso-de-una-silla-de-oficina\/\" target=\"_blank\" rel=\"noopener\">Referencias del proyecto de sillas de oficina<\/a><\/li>\n<li><a href=\"https:\/\/hengyaochair.com\/es\/contacto\/\" target=\"_blank\" rel=\"noopener\">Solicita un presupuesto para un pedido al por mayor<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>777 Ergonomic Mesh Office Chair with 4D Lumbar Support Quick answer: Model 777 is an ergonomic mesh office chair for B2B buyers who need a clear 4-direction lumbar support story, 2D headrest comfort, flip-up armrests, and practical 504 pcs\/40HQ loading. It fits distributors, importers, corporate office programs, coworking spaces, and project buyers that need more [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4200,"parent":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"product-cate":[42],"product-tag":[],"class_list":["post-3969","product","type-product","status-publish","has-post-thumbnail","hentry","product-cate-office-chair"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>777 Ergonomic Mesh Office Chair Wholesale | 4D Lumbar<\/title>\n<meta name=\"description\" content=\"777 ergonomic mesh office chair for distributors and B2B projects. 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