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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 × 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.

Net weight	16 kg
Recommended user weight	130 kg
Suitable user height	185 cm
Seat foam density	45 kg/m3
Back mesh tensile load	120 kg
Gas-lift static axial load	200 kg
Base static load	500 kg
Caster rolling durability	100000 cycles
Seat sliding durability	100000 cycles
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%

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 suspension	Black flexible polyester mesh set in a black polymer or framed back support
Seat upholstery	Black woven polyester fabric over a contoured molded-foam cushion
Seat cushion core	48 kg/m3 molded polyurethane foam, 70 mm thick at center
Headrest contact surface	Black mesh-faced padded headrest with polymer outer shell
Armrest pads	Black molded polyurethane or polymer pads on angular support posts
Back frame	Injection-molded polymer frame with internal lumbar support strips
Seat inner support	15 mm molded plywood or reinforced polymer seat carrier under the cushion
Tilt mechanism	2.5 mm powder-coated steel center-tilt plate with polymer adjustment lever
Gas lift	50 mm black steel telescoping gas lift with Class 3 performance target
Five-star base	Black glass-filled nylon five-star base with five tapered legs
Casters	60 mm black polyurethane twin-wheel casters with polymer forks and steel axles
Fasteners	Zinc-plated steel bolts, washers, and threaded inserts for arm, back, and base joints

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 provides 100 mm total travel through the right-side paddle lever
Tilt movement	Center-tilt mechanism reclines seat and back together through 15 degrees from upright
Tilt lock	One upright-position lock controlled by the visible under-seat lever for focused keyboard work
Tilt tension control	Rear-facing rotary knob adjusts recline resistance across 5 turns for user weight
Headrest adjustment	Height-adjustable headrest with 60 mm vertical travel and 15-degree angular tilt
Back support	Framed flexible mesh and three horizontal lumbar bands provide distributed back pressure without a separate adjustable lumbar pad
Arm support	Fixed-height angular armrests provide 230 mm forearm support and do not pivot or slide
Mobility	Five twin-wheel casters support multidirectional movement on hard floors and low-pile carpet
Knockdown assembly	Back, headrest, armrests, base, lift, and casters assemble to the seat module with bolted connections
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.

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.

Open-plan office	Suitable for workstations used 6 to 8 hours daily because the high mesh back and headrest support seated tasks
Private office	Fits executive or administrative desks requiring swivel access, recline, and a professional black appearance
Home office	Appropriate for computer work and video calls in rooms where a compact 650 mm footprint is required
Meeting and training room	Usable at standard 720 to 760 mm desks with fixed arms and easy caster movement
Hot-desk environment	Suitable for rotating users because height adjustment, swivel, and tension control accommodate different body sizes
Hard-floor workspace	Recommended for tile, wood, laminate, and low-pile carpet with 60 mm polyurethane twin-wheel casters
Recommended desk height	720 to 760 mm work surfaces align the 500 mm maximum seat height and fixed 230 mm arm support
Color configuration	1 standard all-black colorway visible, with buyer-defined fabric color options subject to MOQ

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

Structural safety recommendation	EN 16139: use Level 2 non-domestic seating strength, durability, and safety requirements
Office-chair stability recommendation	EN 1022: use chair stability test methods for forward, rearward, and sideways loading
Caster recommendation	EN 12529: specify swivel-chair castors suitable for office furniture and floor surfaces
Upholstery fabric recommendation	EN 14465: use upholstery fabric abrasion, pilling, and colorfastness classification for ordering

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

Office chair standard recommendation	ANSI/BIFMA X5.11: use large occupant office-chair structural criteria for the 130 kg user target
Base and caster recommendation	ANSI/BIFMA X5.1: apply base, caster, swivel, and cyclic load tests for general-purpose office chairs
Back and arm recommendation	ANSI/BIFMA X5.1: apply back-rest, arm-impact, and arm vertical-load acceptance tests
Emissions recommendation	ANSI/BIFMA M7.1: use formaldehyde and VOC emission test method as an optional procurement requirement
Durability recommendation	ANSI/BIFMA X5.1: specify 120,000 seat-loading cycles for heavy commercial-use evaluation

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

Safety and structural recommendation	GB/T 10357.2: apply chair vertical static-load and back-rest test methods for acceptance
Durability recommendation	GB/T 10357.3: apply chair strength and durability test methods to seat, back, arms, and base
Fabric recommendation	GB/T 21196.2: use Martindale fabric abrasion testing with a 30,000-rub procurement minimum
Foam recommendation	GB/T 10802: use polyurethane foam requirements for load-bearing and long-term comfort
Office-chair safety recommendation	GB/T 28004: use swivel office-chair safety, dimensional, and durability criteria in procurement inspection

Standardized tender description text

This product must meet the following technical requirements:
1. Safety and structural recommendation: GB/T 10357.2: apply chair vertical static-load and back-rest test methods for acceptance;
2. Durability recommendation: GB/T 10357.3: apply chair strength and durability test methods to seat, back, arms, and base;
3. Fabric recommendation: GB/T 21196.2: use Martindale fabric abrasion testing with a 30,000-rub procurement minimum;
4. Foam recommendation: GB/T 10802: use polyurethane foam requirements for load-bearing and long-term comfort;
5. Office-chair safety recommendation: GB/T 28004: use swivel office-chair safety, dimensional, and durability criteria in procurement inspection;
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 Swivel Task Chair with Headrest and Fixed Arms, model UBC-MHB-620-FA, offers a professional all-black seating solution for offices and home workspaces. Its tall mesh back creates a streamlined visual profile, while the padded headrest, contoured fabric seat, angular fixed arms, and five-star caster base provide a balanced task-chair layout. The clear width between armrests is 540 mm, and the high-back structure is suited to users who want shoulder, upper-back, and head support during computer-based work. Construction combines flexible and supportive materials. The back uses black flexible polyester mesh within an injection-molded polymer frame, with three horizontal lumbar bands that distribute back pressure without a separate adjustable pad. The seat is upholstered in black woven polyester fabric over molded polyurethane foam; the cushion core is 48 kg/m3 foam and 70 mm thick at the center, with a finished cushion thickness of 90 mm. A molded plywood or reinforced polymer carrier supports the seat from below. The headrest has a black mesh-faced padded contact surface and polymer shell, while the armrests use molded polyurethane or polymer pads on angular support posts. Functional details support varied working postures. A 50 mm black steel telescoping gas lift provides 100 mm of seat-height travel through a right-side paddle lever. The powder-coated steel center-tilt mechanism lets the seat and back recline together through 15 degrees, with an upright lock for focused keyboard work and a rear-facing knob offering tension adjustment across five turns. The headrest adjusts through 60 mm of vertical travel and 15 degrees of angular tilt. Fixed-height armrests deliver 230 mm of forearm support without pivot or slide movement, and polyurethane twin-wheel casters provide mobility on the nylon five-star base. The chair is appropriate for open-plan workstations, private offices, home offices, meeting and training rooms, hot-desk settings, and hard-floor or low-pile carpet areas. Its swivel access, black appearance, and adjustable features fit rotating users and standard desks. Procurement teams should note the unbranded product identity, 16 kg net weight, 130 kg recommended user weight, and 185 cm suitable user height. Each set ships in two cartons with a packaged gross weight of 23 kg, and assembly time is referenced at 40 minutes per set. These logistics and feature points should be reviewed alongside local seating standards and project volume needs.

Black Mesh High-Back Swivel Task Chair with Headrest and Fixed Arms Specifications

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