Name: Mid-Back Mesh Task Office Chair with Fixed Armrests
Brand: GUOYOU
SKU: LNLRN0

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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)	620 × 600 × 1010 mm
Seat width	500 mm
Seat depth	480 mm
Seat height adjustment range	540 mm
Backrest width	480 mm
Backrest height	550 mm
Armrest height from seat	210 mm
5-star base diameter	600 mm
Caster diameter	50 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	120 kg
Chair net weight	13 kg
Seat foam density	45 kg/m³
Backrest mesh tension rating	120 kg
Caster rolling durability	100000 cycles
Gas lift cycle life	100000 cycles
Armrest static load capacity	80 kg
Recommended maximum user static load	120 kg
Seat Foam Density / Rebound Reference	45 kg/m³ / 65%
Back Foam Density Reference	38 kg/m³

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 panel	Woven nylon mesh stretched over rigid plastic frame
Seat cushion	High-resilience polyurethane foam core wrapped in polyester fabric upholstery
Backrest frame & armrest structure	Reinforced polypropylene (PP) plastic, one-piece integrated design
Height adjustment mechanism	Steel gas spring (gas lift) with black powder-coated outer cylinder
5-star base	Nylon composite 5-leg base with matte black finish
Casters	Black nylon dual-wheel casters with plastic hoods
Tilt control chassis	Steel plate mechanism with plastic adjustment lever
Stitching on seat edges	Lock-stitch upholstery seam along seat perimeter
Backrest support panel	Woven nylon mesh stretched taut over a rigid rectangular plastic frame, secured by frame edge clamping
Seat cushion core	High-resilience polyurethane foam slab with molded contoured top, wrapped in a non-woven fabric inner liner
Seat cushion upholstery	Polyester woven fabric cover stitched to fit the foam core, with finished perimeter edges
Backrest frame and armrest structure	Reinforced polypropylene (PP) plastic with one-piece integrated design, connecting back frame, arm supports and side seat brackets

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 controlled by left-side lever, providing 90mm total vertical travel
Backrest tilt function	Synchro-tilt mechanism with tension adjustment knob, allowing up to 15 degrees of recline from upright
360-degree swivel	Full continuous rotation around central gas lift axis, enabled by precision bearing assembly
Fixed armrest support	Non-adjustable hard plastic armrest pads integrated with back frame, positioned at fixed height relative to seat
Mobility function	5 dual-wheel casters enable smooth rolling on hard and low-pile carpet surfaces, with non-locking design
Lumbar support	Contoured mesh back provides passive lumbar support through curved frame shape, no separate adjustable lumbar pad
Breathable seating surface	Open-weave mesh back allows air circulation to reduce heat buildup during extended sitting
360-degree full swivel	Continuous unobstructed rotation around the central gas lift axis, enabled by a precision steel bearing assembly
Caster-based mobility	5 dual-wheel nylon casters enable smooth rolling on hard floors and low-pile carpet, with a non-locking free-rolling design
Passive lumbar support	Contoured curved mesh back panel provides passive lower-back support through the shaped frame, with no separate adjustable lumbar pad
Breathable backrest ventilation	Open-weave nylon mesh back construction allows continuous air circulation to reduce back heat buildup during extended seated work
Tilt tension adjustment	Rotary knob under the seat adjusts backrest recline resistance, with 5 full rotation turns from minimum to maximum tension

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Packaging carton count	1 unit per carton
Carton dimensions	650 x 350 x 600 mm
Assembly time per unit	30 minutes
Carton gross weight	15 kg
Carton volume	0.137 m³
Single-unit assembly time	30 minutes
20ft container loading quantity	220 units
Reference Package Count	1 set / 2 cartons
Reference Assembly Time	40 minutes per set
Reference Carton Dimensions	850× 420× 720 mm

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	Suitable for daily 8-hour seated work in shared office environments, matching standard 760 mm desk heights
Staff meeting & training rooms	Appropriate for conference and training setups where stackable or uniform seating is required for multi-person spaces
Home office setups	Fit for residential home office use, offering compact size and basic ergonomics for personal workstations
Temporary work hot-desk areas	Suitable for flexible seating zones due to mobile caster design and lightweight structure for easy reconfiguration
Small business startup offices	Cost-effective option for bulk procurement for new office setup with standardized seating requirement
Staff meeting and training rooms	Appropriate for conference and training setups where uniform, mobile seating is required for multi-person flexible arrangement
Co-working space shared seating	Suitable for high-occupancy co-working environments, with durable mesh and caster construction supporting frequent user turnover and movement
Recommended Matching Desk Size	2.4 m executive desk

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2009	Applicable for office chair general safety, strength and durability requirements; recommended for EU market procurement specification
EN 12520:2015	Applicable for seating strength, durability and stability for domestic and office use; recommended as performance acceptance reference
EN 1022:2018	Applicable for seating stability testing for domestic and contract use; recommended for safety compliance verification

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 chairs testing of stability, durability and structural integrity; recommended for North American market quality verification
BIFMA G1-2013	Applicable for office chair ergonomics guideline compliance; recommended for ergonomic performance specification reference

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 38055-2019	Applicable for office chair dimensional and ergonomic general requirements; recommended as acceptance reference for domestic supply
GB/T 10357.2-2013	Applicable for furniture seat and back static load testing; recommended for structural load verification
GB/T 10357.3-2013	Applicable for office chair caster and base durability testing; recommended for mobility component quality acceptance
GB/T 10357.7-2013	Applicable for office chair stability testing under inclined and horizontal load conditions; recommended for safety performance verification

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 38055-2019: Applicable for office chair dimensional and ergonomic general requirements; recommended as acceptance reference for domestic supply;
2. GB/T 10357.2-2013: Applicable for furniture seat and back static load testing; recommended for structural load verification;
3. GB/T 10357.3-2013: Applicable for office chair caster and base durability testing; recommended for mobility component quality acceptance;
4. GB/T 10357.7-2013: Applicable for office chair stability testing under inclined and horizontal load conditions; recommended for safety performance verification;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The GUOYOU Mid-Back Mesh Task Office Chair with Fixed Armrests, model OC-MB-MESH-001, presents a streamlined, functional form tailored for everyday seated use. Its mid-back profile features a taut woven nylon mesh panel stretched over a rigid rectangular plastic frame, paired with a contoured seat cushion finished with neat lock-stitch perimeter seams. Fixed armrests integrate seamlessly with the backrest frame and side seat brackets in a one-piece design, creating a cohesive, uncluttered silhouette that aligns with standard office seating aesthetics. The matte black nylon 5-star base and matching dual-wheel casters contribute to a neutral, versatile visual footprint that fits across varied interior settings. Constructed with a focus on durability and practicality, the chair combines a reinforced polypropylene plastic frame structure with a steel gas spring height adjustment mechanism coated in black powder finish. The seat cushion uses a high-resilience polyurethane foam core wrapped in polyester woven fabric upholstery, while the tilt control chassis relies on a steel plate mechanism with a plastic adjustment lever. All structural components are engineered to support standard dly office use, with mesh backrest construction that delivers lasting shape retention and ventilation benefits. Functionally, the chair offers core task chair features including pneumatic seat height adjustment controlled via a left-side lever, a synchro-tilt mechanism with right-side tension adjustment knob, and full 360-degree swivel enabled by a precision bearing assembly. The fixed hard plastic armrests provide consistent upper body support, while the non-locking dual-wheel casters deliver smooth mobility across hard floors and low-pile carpet. The contoured mesh back delivers passive lumbar support through its curved frame shape, and the open-weave mesh structure promotes continuous r circulation to reduce back heat buildup during extended sitting sessions. This chair suits a wide range of commercial and residential spaces. It works well for open-plan office workstations, staff meeting and training rooms, temporary hot-desk areas, and small business startup offices seeking cost-effective standardized seating. It also fits co-working shared seating environments where frequent user turnover demands durable, easy-to-move furniture, and residential home office setups where compact size and basic ergonomic support are priorities. For procurement planning, note that the chair ships in knockdown packaging requiring assembly, with one unit per carton. Bulk loading capacity for standard 20ft dry contners reaches 220 units, supporting large-scale office setup orders. The chair’s uniform design makes it easy to source matching sets for cohesive workspace layouts, and its mesh back construction reduces maintenance needs compared to fully upholstered seating options.

Mid-Back Mesh Task Office Chair with Fixed Armrests Specifications

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