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PRODUCT MODULE 01 / 06

Physical Dimensions

Automatic mm / inch conversion · Core engineering specifications

Data source: Structured from factory data; final measured values prevail.

Overall dimensions (W × D × H)	650 × 650 × 1220 mm
Finished Seat Cushion Thickness	90 mm
Backrest Padding Thickness	70 mm
Lumbar Support Zone Height	240 mm
Clear Width Between Armrests	540 mm

PRODUCT MODULE 02 / 06

Weight, Load & Performance

Net weight / load capacity / users / durability

Data source: Product performance data; verify exact test conditions before procurement.

Net weight	18 kg
Recommended user weight capacity	150 kg
Suitable user height range	165 to 190 cm
Recommended daily use duration	8 hours
Gas-lift cycle rating	100000 cycles
Caster rolling durability	100000 cycles
Back tilt static load	136 kg
Base static load	1134 kg
Seat fabric abrasion acceptance	50000 Martindale cycles
Warranty period	3 years

PRODUCT MODULE 03 / 06

Materials & Structure

Core acceptance fields · Panels / hardware / frame / upholstery

Data source: Subject to the factory material list and inspection report.

Backrest mesh	Flexible black woven mesh tensioned within a molded polymer frame
Back frame	Black molded polypropylene or nylon outer frame with reinforced side rails
Seat cushion	Molded polyurethane foam with 45 kg/m3 density target and 80 mm thickness
Seat upholstery	Black woven office fabric with 50000-cycle Martindale acceptance target
Seat inner support	12 mm molded plywood or reinforced polymer seat board
Headrest	Padded polyurethane cushion wrapped in black fabric or mesh and mounted on a polymer bracket
Armrests	Black rigid polymer T-shaped arm pads supported by vertical polymer or steel posts
Gas lift	50 mm diameter black powder-coated steel gas cylinder, class 4 procurement grade
Seat mechanism	2.5 mm steel tilt mechanism with black painted finish and single height lever
Casters	Black nylon twin-wheel casters with 60 mm diameter wheels and steel axle pins
Frame fasteners	Zinc-plated steel bolts, washers and threaded inserts with corrosion-resistant black covers
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic lift raises the seat through 100 mm using a side lever under the seat
360-degree swivel	Seat and back rotate 360 degrees around the central gas-lift bearing
Back recline	Synchronized tilt mechanism allows 15-degree rearward recline with 3-position locking target
Tilt tension control	Rotary tension knob adjusts recline resistance for users up to 150 kg
Headrest adjustment	Headrest provides 80 mm height travel and 15-degree angle change for neck support
Lumbar support	Central lower back panel provides passive lumbar contact at a 220 mm support height
Arm support	Fixed T-armrests provide 230 mm forearm support height above the seat
Mobility	Five twin-wheel casters enable rolling and turning on carpet, wood or hard floors
Seat-depth limitation	Fixed seat depth at 480 mm with no visible sliding seat mechanism
Rocker lock	Back tilt locks at upright, 8-degree and 15-degree recline positions as procurement target
Floor protection	Soft-tread wheel option can be specified to reduce hard-floor marking
Knockdown assembly	Back, armrests, base, gas lift and casters assemble to the seat with bolted connections

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Packaged gross weight	21 kg
Reference Package Count	1 set / 2 cartons
Reference Assembly Time	40 minutes per set
Reference Carton Dimensions	850× 420× 720 mm
Reference Packaged Gross Weight	23 kg/set
Reference Carton Volume	0.26 m³/set
Indicative 20GP Loading	135 sets at 85% space utilization
Indicative 40HQ Loading	320 sets at 85% space utilization

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Private office workstation	Suitable for managers and knowledge workers needing back, head and arm support during 8-hour desk work
Open-plan task seating	Suitable for shared office zones where swivel, mobility and breathable backs are required
Home office	Suitable for a 1200 to 1600 mm wide desk with 720 to 760 mm work-surface height
Meeting and computer work	Suitable for computer-based tasks, video calls and document review rather than lounge seating
Hot-desk environment	Suitable for users 165 to 190 cm tall when desk and monitor heights are adjustable
Commercial procurement package	Can be specified in batches with black fabric, black mesh and five-star nylon base as one consistent SKU
Floor-surface planning	Use soft-tread casters for hardwood or tile floors and standard hard-tread casters for low-pile carpet
Recommended Matching Desk Size	2.4 m executive desk

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1 applicability	Use for office chair dimensions and safety-related geometric requirements
EN 1335-2 applicability	Use for office chair safety, structural stability and mechanical performance requirements
EN 1335-3 applicability	Use for office chair structural strength, durability and back-rest test methods
EN 1021-1 applicability	Use for cigarette ignition smouldering upholstery flammability assessment
EN 1021-2 applicability	Use for match-flame upholstered furniture ignitability assessment

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1 base load applicability	Use the five-legged base static-load verification at 1134 kg

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 10357.2 applicability	Use for furniture mechanical surface coating physical-property tests where coated metal parts are supplied
GB/T 10357.3 applicability	Use for chair strength and durability test methods in commercial procurement inspection
GB/T 28004.1 applicability	Use for office-chair general safety and dimensional requirements

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 10357.2 applicability: Use for furniture mechanical surface coating physical-property tests where coated metal parts are supplied;
2. GB/T 10357.3 applicability: Use for chair strength and durability test methods in commercial procurement inspection;
3. GB/T 28004.1 applicability: Use for office-chair general safety and dimensional requirements;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Black High-Back Mesh Ergonomic Office Chair is an unbranded task seating solution designed for daily desk work where head, back, arm, and lower-back support are required. Its appearance is defined by a flexible black woven mesh back tensioned within a molded polymer frame, a black upholstered foam seat, T-shaped armrests, a central gas-lift column, and a five-star base with twin-wheel casters. The coordinated black finish gives the chair a consistent, understated profile suitable for standard office interiors. The high-back form combines a tall backrest with an adjustable padded headrest, while the 540 mm clear width between armrests creates an open seating zone. The finished seat cushion is 90 mm thick, the backrest padding is 70 mm thick, and the lumbar support zone is 240 mm high. Construction centers on a black molded polypropylene or nylon outer back frame with reinforced side rails. The seat uses molded polyurethane foam with a 45 kg/m3 density target and 80 mm thickness, upholstered in black woven office fabric with a 50000-cycle Martindale acceptance target. Beneath the cushion is a 12 mm molded plywood or reinforced polymer seat board. The headrest has a polyurethane cushion wrapped in black fabric or mesh on a polymer bracket, and the fixed T-armrests use rigid polymer pads supported by vertical polymer or steel posts. A 50 mm diameter black powder-coated class 4 procurement-grade steel gas cylinder connects the seat to the mobile base. The 2.5 mm black-painted steel tilt mechanism is operated by a single height lever. Functional features include 100 mm pneumatic seat-height travel, 360-degree swivel, and a synchronized tilt mechanism providing 15-degree rearward recline with a three-position locking target. A rotary tension knob adjusts recline resistance for users up to 150 kg. The headrest offers 80 mm of height travel and 15-degree angle adjustment, while the central lower-back panel provides passive lumbar contact at a 220 mm support height. Fixed T-armrests place forearm support 230 mm above the seat. The chair is rated for users 165 to 190 cm tall, a maximum weight capacity of 150 kg, and eight hours of daily use. Additional ratings include 100000 gas-lift cycles, 100000 caster rolling cycles, an 18 kg net weight, and 136 kg back-tilt static load capacity. It fits private offices, open-plan task areas, home offices, meeting rooms, computer-based work, video calls, document review, and hot-desk environments with adjustable desk and monitor heights. For home use, it is suited to a 1600 mm wide desk with a 760 mm maximum work-surface height. Commercial buyers can specify it as one consistent black SKU with mesh back, fabric seat, and five-star nylon base. Procurement planning should allow for two cartons per set, 23 kg packaged gross weight, 0.26 cubic meter packaged volume, carton dimensions of 850 by 420 by 720 mm, and 40 minutes assembly time per chair.

Black High-Back Mesh Ergonomic Office Chair Specifications

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