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

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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)	635 × 640 × 1095 mm
Seat width	505 mm
Seat depth	465 mm
Backrest height	570 mm
Seat height adjustment range (max)	525 mm
Five-star base diameter	640 mm
Armrest height above seat	200 mm
Backrest frame width	430 mm
Maximum armrest height from floor	725 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	12 kg
Recommended maximum user weight	136 kg
Seat foam density	45 kg/m³
Seat foam rebound rate	45 %
Gas lift stroke length	85 mm
Mesh back abrasion resistance	50000 cycles
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
Five-star Base Static Load Reference	Acceptance target ≥120 kg; chair reference load 150 kg

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 black polyester mesh
Seat cushion padding	70mm thick high-density moulded foam
Seat surface upholstery	Black wear-resistant polyester fabric
Armrests	Injection-moulded black polypropylene with soft top pad
Internal seat frame	1.5mm thick welded steel plate
Five-star base	Black injection-moulded nylon
Gas lift cylinder	Chromed steel Class 3 pneumatic cylinder
Casters	50mm diameter black nylon dual-wheel casters
Seat mechanism plate	2.0mm thick stamped steel center-tilt chassis
Seam stitch pitch	3 stitches per cm
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.

Pneumatic seat height adjustment	110mm stroke lever-operated adjustment under seat, locks at set height
360-degree swivel rotation	Full 360° smooth rotation supported by central gas lift and base
Center-tilt recline function	12° backward tilt with tension adjustment knob under seat
Integrated lumbar support	Fixed curved lumbar bump positioned at lower back for seated support
Smooth rolling mobility	Five dual-wheel casters support movement across hard floors and low-pile carpet
Fixed armrest support	Static curved armrests provide 200mm high forearm support for seated tasks
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 workstations	Sized to fit standard 750mm high office desks for daily task work
Home office workspaces	Compact footprint suitable for small home study and desk setups
Conference and meeting rooms	Professional black finish matches standard meeting room furniture layouts
Co-working shared spaces	Durable construction supports high-turnover multi-user daily use
Call center and reception stations	Breathable mesh back supports extended seated shifts for staff
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	Applies to office chair dimensional, safety and strength requirements for task seating
EN 1022:2018	Applies to seating stability determination for domestic and contract office chairs

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Applies to general-purpose office chair safety, durability and performance benchmarks
Caster rolling durability	40000 cycles
Static load capacity for five-star base	1134 kg

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Applies to office chair dimensional stability and size measurement requirements
GB/T 10357.3-2013	Applies to office chair mechanical strength and durability test methods

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Applies to office chair dimensional stability and size measurement requirements;
2. GB/T 10357.3-2013: Applies to office chair mechanical strength and durability test methods;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The YUXIANG MBM-OFC-635 is a mid-back ergonomic swivel office chair featuring a streamlined, professional all-black aesthetic suited to both commercial and residential work environments. Its layout balances compact footprint with structured support: a contoured mesh backrest rises to mid-back height, paired with a cushioned seat, static curved fixed armrests, and a wide five-star base fitted with dual-wheel casters for a stable, uncluttered silhouette that integrates smoothly with standard desk setups. Built for consistent daily use, the chair uses durable, task-focused materials across its construction. The backrest is upholstered in breathable black polyester mesh, designed to support air circulation during long seated periods. The seat uses thick high-density moulded foam padding, wrapped in wear-resistant black polyester fabric, with an internal frame of welded steel plate for structural rigidity. Fixed armrests are constructed from injection-moulded black polypropylene topped with soft padding, while the five-star base is made from sturdy injection-moulded black nylon. Mobility and adjustment are supported by a chromed steel Class 3 pneumatic cylinder, nylon dual-wheel casters, and a stamped steel center-tilt chassis. Functional design prioritizes ergonomic support and ease of use. Lever-operated pneumatic adjustment under the seat lets users set their preferred seat height, which locks securely in place. The chair delivers full 360-degree smooth swivel rotation, alongside a center-tilt recline function with adjustable tension, with suggested lock positions for tailored recline preference. A fixed curved lumbar bump integrated into the backrest provides targeted lower back support, while static armrests offer consistent forearm support for desktop tasks. The casters roll smoothly across hard floors and low-pile carpet, enabling easy repositioning during work. This chair is well suited for open-plan office workstations paired with standard-height office desks, as well as compact home office workspaces and small study setups. Its understated professional black finish works seamlessly in conference and meeting rooms, while its durable build holds up to high-turnover use in co-working shared spaces. The breathable mesh back also makes it a strong fit for call center and reception stations where staff work extended seated shifts. For procurement planning, note that each chair ships in two cartons, with a reference assembly time of 40 minutes per unit. Freight planning can account for a packaged set volume that supports 135 sets per 20GP container at 85% space utilization, helping teams coordinate bulk ordering and delivery scheduling for large workspace fit-outs. The chair is rated to support a recommended maximum user weight aligned with multi-user commercial use, and pairs well with standard office desks including executive desk setups. When planning seating layouts, its compact dimensions make it easy to arrange across varied workspace configurations without excess visual or spatial bulk.

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

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