Name: Mid-Back Black Mesh Ergonomic Office Chair with Fixed Armrests
Brand: YUXIANG
SKU: B1B5ZH

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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)	660 × 640 × 1130 mm
Backrest width	520 mm
Seat width	490 mm
Backrest height	620 mm
Seat depth	410 mm
Seat height adjustment range	530 mm
Seat cushion thickness	80 mm
Armrest height above seat	200 mm
Total armrest height from floor	715 mm
Five-star base total diameter	640 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 product weight	13 kg
Maximum recommended user weight	136 kg
Five-star base static load rating	1000 kg
Recommended user height range	1800 mm
Tilt mechanism cycle rating	60000 cycles
Seat cushion foam density	45 kg/m³
Seat foam rebound rate	55%
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%
Back Foam Density Reference	38 kg/m³
Upholstery Thickness / Abrasion Reference	1.4 mm / 50000 cycles

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 upholstery	Breathable high-density polyester mesh
Back support frame	Nylon with fiberglass reinforcement
Seat cushion core	High-resilience cold-cured polyurethane foam
Seat upholstery	Woven abrasion-resistant fabric
Armrests	Fixed-height black PP plastic with smooth surface
Gas lift cylinder	Class 3 chrome-plated steel
Tilt mechanism	2.5 mm thick steel butterfly plate with lock and tension adjust
Five-star base	Black molded nylon
Casters	50 mm diameter PU-coated nylon swivel casters
Seat inner support	12 mm thick molded plywood
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	100 mm vertical stroke via central gas lift
Swivel function	360-degree full rotation around central gas lift axis
Tilt function	12-degree rearward recline with upright position lock
Tilt tension control	User-adjustable knob modulates recline resistance for different weights
Mobility function	Five dual-surface casters for smooth rolling on hard floors and carpet
Lumbar support	Contoured fixed mesh lumbar zone built into lower backrest
Armrest support	Fixed-height loop armrests provide static forearm support during desk work
Recline Angle / Lock Reference	125° with 3suggested lock positions
Tilt Tension User-weight Range	Reference adjustment coverage 120 kg
Rotation / Mobility Configuration	360° swivel with 5-caster multidirectional movement

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Single carton dimensions	650 x 610 x 480 mm
Gross weight per packaged unit	15 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.

Home office use	Suitable for private workstations with 760 mm standard desk height
Corporate open office use	Ideal for employee task seating in general workspace layouts
Small meeting room use	Appropriate for short-duration meeting and collaborative seating areas
Student study space use	Suitable for secondary school or university dormitory/study desk setups
Coworking space use	Durable mid-tier seating for hot-desk and shared work zones
Reception area use	Appropriate for staff-side reception workstations in office lobbies
Recommended Matching Desk Size	2.4 m executive desk
Reference Daily Use Duration	8 hours/day; confirm by ergonomic testing

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Applicable for office work chair dimensional safety requirements
EN 1335-2:2018	Applicable for office chair structural strength and stability requirements
EN 1335-3:2009	Applicable for office chair mechanical safety test methods

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Applicable for general-purpose office chair performance and durability requirements
ANSI/BIFMA X5.11-2015	Applicable for office chair vertical load capacity testing for heavy users
Caster rolling durability	100000 cycles

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applicable for office furniture seating dimensional accuracy requirements
GB/T 3324-2017	Applicable for general wooden and metal office furniture quality requirements
GB 18584-2001	Applicable for indoor decoration material limited harmful substance emissions
GB/T 10357.3-2013	Applicable for chair seating mechanical performance test methods

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applicable for office furniture seating dimensional accuracy requirements;
2. GB/T 3324-2017: Applicable for general wooden and metal office furniture quality requirements;
3. GB 18584-2001: Applicable for indoor decoration material limited harmful substance emissions;
4. GB/T 10357.3-2013: Applicable for chair seating mechanical performance test methods;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The YUXIANG MB-MESH-OFF-CH-001 mid-back black mesh ergonomic office chair balances streamlined professional aesthetics, durable construction, and user-centric functionality for a wide range of work and study settings. Its visual form features a sleek, uniform black finish with clean, unobtrusive lines, centered on a contoured mid-rise backrest framed for structural rigidity, paired with neatly integrated fixed loop armrests and a classic five-star caster base that creates a compact, orderly footprint suited to organized space layouts. The chair’s overall dimensions measure 660 x 640 x 1130 mm, with a 520 mm wide backrest, 490 mm wide seat, 620 mm backrest height, 410 mm seat depth, 80 mm thick seat cushion, and armrests positioned 200 mm above the seat surface for consistent forearm placement. For construction, the backrest uses breathable high-density polyester mesh stretched over a nylon frame reinforced with fiberglass, while the seat cushion core is formed from high-resilience cold-cured polyurethane foam with a 45 kg/m³ density and 55% rebound rate, upholstered in woven abrasion-resistant fabric. Fixed armrests are crafted from smooth black PP plastic, supported by a Class 3 chrome-plated steel gas lift, 2.5 mm thick steel butterfly plate tilt mechanism with lock and tension adjustment, black molded nylon five-star base, and 50 mm diameter PU-coated nylon swivel casters. The chair supports 100 mm of vertical seat height adjustment reaching a maximum 530 mm seat height, 360-degree full swivel rotation, 12-degree rearward recline with upright position lock, user-adjustable tilt tension to modulate recline resistance, smooth rolling across hard floors and carpet via five dual-surface casters, and a contoured fixed mesh lumbar zone integrated into the lower backrest. It holds a 13 kg net weight, supports a maximum recommended user weight of 136 kg, accommodates users up to 1800 mm tall, and meets durability benchmarks including a 1000 kg five-star base static load rating and 60000-cycle tilt mechanism rating. This model is well suited for home office workstations paired with 760 mm standard height desks, corporate open office employee task seating, small meeting room collaborative spaces, secondary school and university study or dormitory desks, coworking hot-desk zones, and staff-side reception workstations in office lobbies. For procurement, note each unit ships across two cartons, with a total packaged gross weight of 23 kg, and requires 40 minutes of assembly time per set. Order quantities should align with planned seating layouts, and the chair is positioned as a durable mid-tier option for high-utilization shared or dedicated work areas.

Mid-Back Black Mesh Ergonomic Office Chair with Fixed Armrests Specifications

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