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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)	560 × 660 × 1030 mm
Seat width	495 mm
Seat depth	450 mm
Seat cushion thickness	80 mm
Maximum seat height (floor to seat top)	510 mm
Minimum seat height (floor to seat top)	410 mm
Backrest width	445 mm
Backrest height	565 mm
Armrest height above seat	210 mm
Five-star base diameter	700 mm
Caster diameter	60 mm
Seat height adjustment stroke	100 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 maximum user weight	136 kg
Net product weight	15.4 kg
Tilt angle range	12 degrees
Seat foam density	45 kg/m³
Foam rebound rate	40%
Upholstery abrasion resistance	50000 double rubs
Caster rolling durability	40000 cycles
Seam stitch pitch	8 mm
Base static load capacity	1136 kg
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.

Seat and back upholstery	1.5 mm thick black PU faux leather
Seat and back padding	High-density cold-cured polyurethane foam
Internal seat support	18 mm thick curved plywood panel
Armrest structure	Polished chrome-plated steel cantilever frame
Armrest top pad	Black polyurethane hard pad
Five-star base	Polished chrome-plated steel 5-leg swivel base
Gas lift cylinder	Class 3 steel pneumatic cylinder with chrome finish
Tilt mechanism	2.5 mm thick steel locking chassis with tension knob
Casters	60 mm diameter black nylon dual-wheel casters
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board
Backrest Internal Frame Thickness	14 mm bent plywood/composite reinforced frame
Five-star Base Material Thickness	Metal base wall 3.5 mm; diameter 700 mm

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	Pneumatic gas lift adjusts seat height 100 mm via right-side lever
360-degree swivel	Full 360-degree horizontal rotation enabled by central swivel joint
Tilt function	Synchronized seat and back tilt up to 12 degrees with upright lock position
Tilt tension adjustment	Under-seat rotary knob adjusts tilt resistance to match user weight
Fixed armrest support	Cantilever chrome armrests provide fixed 210 mm arm support above seat
Mobile rolling	Dual-wheel casters enable smooth rolling on carpet and hard floor surfaces
Height lock	Gas lift automatically locks at selected height when adjustment lever is released
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 office workstations	Suitable for long-duration desk work at standard 760 mm height desks
Home office spaces	Fits small home work areas with 1.4 m wide desks without excess bulk
Conference and meeting rooms	Polished chrome and black PU finish matches formal business meeting interiors
Reception and front desk areas	Professional formal appearance suitable for guest and staff reception seating
Private manager offices	Mid-back support and professional finish appropriate for entry-level manager workspaces
Training room seating	Mobile castered design allows easy reconfiguration between training sessions
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	Office work chair dimensions, safety and strength requirements for work use
EN 1335-2:2018	Office chair safety requirements for structural performance and stability
EN 1335-3:2009	Office chair test methods for verifying mechanical safety compliance

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Office chair standard for static, dynamic and durability performance testing

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3324-2017	General technical requirements for wooden furniture, applicable to internal seat support panel
GB/T 22800-2009	Office chair mechanical performance test methods for structural durability verification
GB 28007-2011	Office chair strength, stability and durability requirements for commercial use

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to internal seat support panel;
2. GB/T 22800-2009: Office chair mechanical performance test methods for structural durability verification;
3. GB 28007-2011: Office chair strength, stability and durability requirements for commercial use;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The mid-back black faux leather swivel office task chair (model OTB-MB56-PU-CRM, unbranded) presents a streamlined, professional silhouette tailored to modern work environments, with a coordinated black and polished chrome finish that balances understated formality and functional appeal. Its five-star chrome base sits below a contoured seat and mid-rise backrest, flanked by fixed cantilever armrests that align neatly with standard desk surfaces without protruding excessively into surrounding space. The chair’s overall dimensions are structured to deliver comfortable support without unnecessary bulk, creating a compact footprint that adapts well to varied layout configurations. Constructed for regular daily use, the chair features 1.5 mm thick black PU faux leather upholstery over high-density cold-cured polyurethane foam padding, supported internally by an 18 mm curved plywood seat panel. Its frame, cantilever armrest structure, and five-star swivel base are finished in polished chrome-plated steel, paired with a Class 3 chrome-finished steel pneumatic gas lift and 2.5 mm thick steel locking tilt chassis. Armrests are topped with firm black polyurethane pads, while 60 mm black nylon dual-wheel casters mount to each base leg for stable movement. The upholstery is rated to withstand 50000 double rubs, casters deliver reliable performance through 40000 rolling cycles, seat foam carries a 45 kg/m³ density with 40% rebound rate, and the chair supports a maximum user weight of 136 kg, with a net product weight of 15.4 kg. Core functional features support comfortable, flexible work: a right-side lever operates the pneumatic lift to adjust seat height across a 100 mm range, locking automatically at the selected position when released, with a maximum seat height of 510 mm and minimum of 410 mm from floor to seat top. A central swivel joint enables full 360-degree horizontal rotation, while the synchronized tilt mechanism allows seat and back to recline up to 12 degrees, with an upright lock position and under-seat rotary knob to adjust tilt resistance to match user weight. Fixed armrests sit 210 mm above the seat surface for stable upper body support, and dual-wheel casters roll smoothly across both carpet and hard floor surfaces. This chair is suited for a wide range of professional and hybrid work settings. It works well for long-duration desk work at open office workstations paired with standard 760 mm height desks, fits compact home office spaces with 1.4 m wide desks without creating visual or physical clutter, complements formal conference and meeting room interiors, delivers a polished appearance for reception and front desk guest and staff seating, suits entry-level private manager offices, and supports easy reconfiguration for training room layouts thanks to its mobile design. For procurement planning, note that each unit ships across two cartons, with a packaged gross weight of 23 kg per set and total carton volume of 0.26 m³ per set. Assembly takes 40 minutes per unit, and a 20GP container can hold 135 sets at 85% space utilization to support bulk order logistics calculations.

Mid-Back Black Faux Leather Swivel Office Task Chair Specifications

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