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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)	680 × 680 × 1290 mm
Overall chair footprint	680 x 680 x 1290 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.

Recommended user weight capacity	150 kg
Chair net weight	18.5 kg
Seat foam density	45 kg/m3
Back mesh tensile load	120 kg static panel load
Recommended user height range	1900 mm
Seat static load target	1000 kg
Caster rolling durability target	100000 cycles
Gas-lift service cycle target	100000 height-adjustment cycles
Warranty period	5 years
Color option count	1 visible color

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	Black flexible mesh stretched within a contoured black polymer outer frame and internal steel support frame
Seat cushion	Fabric-upholstered high-resilience polyurethane foam on a molded plywood or steel seat pan
Headrest	Black mesh panel on a curved polymer housing with height-adjustable bracket
Lumbar support	Contoured black fabric or mesh-covered lumbar zone integrated into the central backrest
Armrests	Height-adjustable black polymer arm posts with flat polymer arm pads
Base	Black nylon or glass-fiber-reinforced nylon five-star base with central steel gas-lift socket

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic lever raises and lowers the seat through an 80 mm stroke using a Class 4 gas lift
Backrest tilt	Synchro or center-tilt mechanism provides a 15-degree recline with tension control knob
Tilt lock	Multi-position lock secures the back at upright and reclined positions through the under-seat lever assembly
Armrest adjustment	4D-style arm system is specified with 60 mm height travel, 40 mm width shift, 40 mm slide, and 30-degree pad rotation

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Packed carton dimensions	840 x 650 x 360 mm
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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

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

Open-plan office workstations	Suited to 540 mm desk-height workstations where users need lumbar support, head support, and rolling mobility
Home office and prolonged computer work	Appropriate for users requiring breathable mesh back support, padded seat contact, and 360-degree swivel access

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1	Office furniture seating dimensions; use to verify seat, back, clearance, and adjustment dimensional requirements
EN 1335-2	Office furniture seating safety requirements; use for structural safety and stability acceptance
EN 1335-3	Office furniture seating test methods; use for strength, durability, and stability verification
EN 1022	Domestic furniture seating determination of stability; useful supplemental tipping verification

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1	Office chairs standard for safety, durability, structural strength, dimensional checks, and stability
BIFMA e3 level	Sustainability standard for furniture materials, energy, human health, and social impacts; use if supplier provides rated documentation

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 10357.2	Test method for furniture mechanical properties on chairs and stools; use for seat and back static-load verification
GB/T 10357.3	Test method for chair and stool fatigue performance; use for seat and back durability validation
GB/T 3324	General technical requirements for wooden furniture; apply only to any wood-based seat structure after BOM confirmation
GB 18584	Applicable standards and test results require confirmation

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 10357.2: Test method for furniture mechanical properties on chairs and stools; use for seat and back static-load verification;
2. GB/T 10357.3: Test method for chair and stool fatigue performance; use for seat and back durability validation;
3. GB/T 3324: General technical requirements for wooden furniture; apply only to any wood-based seat structure after BOM confirmation;
4. GB 18584: Applicable standards and test results require confirmation;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The Black Mesh High-Back Ergonomic Office Chair with Headrest and Adjustable Arms, model EM-HB01-BLK, is an unbranded task seating solution designed for focused office and computer-based work. Its tall black mesh back creates a streamlined, professional appearance while the integrated contoured lumbar zone and curved mesh headrest provide structured support from the lower back to the head. The chair presents a compact 680 by 680 millimeter footprint and an overall height of 1290 millimeters, with 540 millimeters of clear width between the armrests. The black polymer outer frame, internal steel support structure, black armrests, and five-star base maintain a coordinated monochrome look suited to a broad range of interiors. Construction combines breathable and padded materials. The backrest uses flexible black mesh held in a contoured polymer frame with internal steel support, while the seat uses fabric-upholstered high-resilience polyurethane foam over a molded plywood or steel seat pan. The finished cushion is 90 millimeters thick, and the backrest padding is 70 millimeters thick. The headrest pairs a black mesh panel with a curved polymer housing and height-adjustable bracket. A black nylon or glass-fiber-reinforced nylon five-star base, central steel gas-lift socket, dual-wheel casters, and Class 4 gas lift complete the seating system. Functional adjustments support changing postures throughout the workday. A pneumatic lever controls seat height through an 80 millimeter stroke. The backrest offers a synchro or center-tilt mechanism with a 15-degree recline, tension control, and multi-position locking through under-seat levers. The 4D-style armrests provide 60 millimeters of height travel, 40 millimeters of width shift, 40 millimeters of slide, and 30-degree pad rotation. A 360-degree swivel and rolling casters support easy movement at the workstation. The chair is specified for users up to 150 kilograms and for user heights up to 1900 millimeters. This model is suitable for open-plan office workstations, desk-based roles, home offices, and prolonged computer work where lumbar support, head support, and mobility are priorities. Procurement teams should plan for assembly, with a reference time of 40 minutes per set. The product is supplied as one set across two cartons, with a packaged gross weight of 23 kilograms and reference carton volume of 0.26 cubic meter per set. Buyers should also confirm local delivery access, assembly responsibility, maintenance access for casters and gas components, and suitability for the intended desk and flooring conditions.

Black Mesh High-Back Ergonomic Office Chair with Headrest and Adjustable Arms Specifications

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