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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 × 680 × 1210 mm
Seat width	490 mm
Seat depth	430 mm
Seat height range	515 mm
Seat cushion thickness	60 mm
Backrest height	550 mm
Headrest height	95 mm
Headrest width	420 mm
Armrest height above seat	180 mm
Five-star base diameter	350 mm
Minimum overall height	1110 mm
Minimum seat height	415 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	150 kg
Suitable user height range	1880 mm
Net weight	22 kg
Gas lift cycle rating	100000 cycles
Mesh abrasion resistance	50000 double rubs
Seat foam density	55 kg/m³
Seat foam rebound rate	45%
Warranty period	5 years
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 upholstery	Breathable polyester mesh
Seat cushion core	55kg/m³ high-density molded polyurethane foam
Backrest frame	Glass-fiber reinforced polypropylene
Five-star base	Reinforced nylon (polyamide)
Gas lift cylinder	Steel with black powder coat
Armrest pads	Injection-molded polyurethane
Armrest supports	Reinforced polypropylene
Casters	60mm diameter polyurethane tread on nylon hub
Internal seat frame	15mm thick multi-layer plywood
Chassis mechanism	2.5mm thick stamped steel
Seam stitch pitch	8 mm
Seat Internal Support Board Thickness	14 mm bent plywood or equivalent support board

PRODUCT MODULE 04 / 06

Functions & Adjustment

Adjustment / rotation / tilt / mobility / storage features

Data source: Functional configuration; the supplier specification prevails.

Seat height adjustment	100mm vertical travel via Class 3 gas lift, controlled by under-seat lever
Headrest adjustment	Height adjustable with 60° rotation for neck support
Armrest adjustment	100mm vertical height adjustment to match desk height
Lumbar support	Height-adjustable curved support zone for lower back
Tilt function	135° synchronized back recline with single-position tilt lock
Swivel function	360° rotation around central gas lift axis
Mobility function	Smooth rolling on hard floors and low-pile carpet via dual-wheel casters
Tilt tension control	Adjustable resistance knob to match user body weight
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.

Carton dimensions	850 x 650 x 300 mm
Gross weight per carton	24 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.

Open office workstation use	Suits 8-hour daily desk work for general staff, breathable mesh for long sitting comfort
Home office setup	Fits compact home workspaces with neutral grey/white color scheme
Conference room use	Appropriate for extended meeting seating with adjustable lumbar support
Height range compatibility	Fits users 1880 mm tall, compatible with standard 760 mm office desks
Co-working space use	Durable construction supports shared multi-user environments with high use frequency
Study room use	Suitable for student and remote worker use with ergonomic spinal support
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

Office chair safety requirement	EN 1335:2020
Strength and durability requirement	EN 1335:2018
Stability requirement	EN 1022:2018

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

General purpose office chair standard	ANSI/BIFMA X2017
Gas lift safety requirement	ANSI/BIFMA X5.1 Clause 8
Caster durability requirement	ANSI/BIFMA X5.1 Clause 12
Caster rolling durability	98000 cycles

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

General safety requirement	GB/T 3326
Surface durability requirement	GB/T 4893.8
Upholstery durability requirement	GB/T 19082
Stability requirement	GB/T 10357.2

Standardized tender description text

This product must meet the following technical requirements:
1. General safety requirement: GB/T 3326;
2. Surface durability requirement: GB/T 4893.8;
3. Upholstery durability requirement: GB/T 19082;
4. Stability requirement: GB/T 10357.2;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The EOCH-MSH-650W is an unbranded high-back mesh ergonomic office chair designed to balance supportive comfort, functional flexibility, and understated aesthetic cohesion across professional and personal workspaces. Its clean, streamlined silhouette features a tall, contoured mesh back paired with a plush, neatly proportioned seat, finished in a neutral grey and white color palette that blends seamlessly into a wide range of interior design schemes. The high-back structure rises to cradle the full length of the spine, topped with a wide, curved headrest positioned to support the neck during upright work and reclined rest.
Constructed for long-term durability, the chair pairs a breathable polyester mesh backrest with a seat cushion cored in high-density molded polyurethane foam, mounted to a glass-fiber reinforced polypropylene back frame and internal multi-layer plywood seat frame. Its base is a reinforced nylon five-star structure fitted with dual-wheel polyurethane casters, while armrests combine rigid reinforced polypropylene supports with soft injection-molded polyurethane pads. The central steel gas lift cylinder features a smooth black powder coat finish, and all structural components are engineered to withstand consistent, repeated use in high-traffic settings.
Functional adjustments are engineered to support personalized comfort across extended seating sessions. Users can modify seat height via an under-seat lever, with smooth vertical travel enabled by the Class 3 gas lift. The headrest adjusts for height and rotates 60 degrees to deliver targeted neck support, while armrests adjust vertically to align with standard desk heights. A height-adjustable curved lumbar zone provides tailored lower back support, and a synchronized tilt function allows 135 degrees of back recline with a single-position lock. The chair swivels a full 360 degrees, and its casters roll smoothly across hard floors and low-pile carpet to support easy movement at the workstation.
This chair is well suited for open office workstations supporting 8 hours of daily desk work for general staff, as well as co-working spaces where durable construction holds up to frequent shared multi-user use. It fits comfortably in compact home offices and residential study rooms, where its ergonomic spinal support benefits students and remote workers, and it is equally appropriate for conference room seating for extended meetings. It is compatible with standard 760 mm office desks and accommodates users up to 1880 mm tall, with a recommended maximum user weight of 150 kg.
For procurement, note that each chair ships across two cartons, with a total packaged gross weight of 23 kg per set. Assembly takes an 40 minutes per unit, so teams planning bulk installation can allocate staffing time accordingly. Its neutral finish and versatile adjustment range make it a consistent choice for projects requiring uniform seating across multiple work zones, while its durable material stack reduces long-term replacement needs for high-use environments.

High-Back Mesh Ergonomic Office Chair with Adjustable Headrest Specifications

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