Name: Black Mid-Back Executive Office Chair with Upholstered Seat and Back
Brand: GUOYOU
SKU: PNCZ3A

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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 × 620 × 1050 mm
Seat width	500 x 480 mm
Seat height range	540 mm
Backrest dimensions (W x H)	500 x 600 mm
Backrest thickness	80 mm
Seat cushion thickness	90 mm
Armrest height from seat	200 mm
Armrest pad size	250 x 80 mm
5-star base diameter	620 mm
Caster diameter	50 mm
Seat depth	480 mm
Backrest width	500 mm
Backrest height	600 mm
Armrest pad length	250 mm
Armrest pad width	80 mm
Finished Seat Cushion Thickness	90 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	15 kg
Recommended maximum user weight	120 kg
Seat foam density	45 kg/m³
Back foam density	35 kg/m³
Gas lift static load rating	150 kg
5-star base static load	1000 kg
Caster rolling durability	100000 cycles
5-star base static load rating	1000 kg
Upholstery abrasion resistance	20000 cycles
Backrest tilt tension adjustment range	6 levels

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	Black faux leather (PVC/PU blend face with fabric backing
Seat cushion core	Molded high-density polyurethane foam
Internal seat frame	Plywood + steel reinforcing frame
Armrest assembly	Black hard plastic (PP) arm structure with integrated top pad
Gas lift cylinder	Chrome-plated steel gas spring
5-star base	Black nylon (PA) reinforced with glass fiber
Casters	Black polyurethane (PU) tread with plastic housing
Tilt mechanism	Black steel synchro-tilt plate
Stitching	Synthetic thread upholstery stitching
Backrest cushion core	Molded medium-density polyurethane foam with integrated lumbar pad, contoured shape
Upholstery stitching	High-strength polyester thread lock-stitch construction, 5 stitches per cm
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	100 mm vertical stroke via pneumatic gas lift, operated by left-side lever
Backrest tilt	12 degree backward tilt angle with lock function
360-degree swivel	Full 360-degree rotation around central gas lift axis
Mobile base casters	5 dual-wheel PU casters for smooth rolling on hard and carpeted floors
Lumbar support	Built-in padded lumbar panel
Fixed armrests	Stationary T-shaped arm supports at fixed height from seat
Backrest tilt function	12 degree maximum backward tilt angle with upright position lock, tension adjustable via 6-position rotary knob under seat center
360-degree swivel function	Full 360-degree continuous rotation around central gas lift axis
Mobile caster base	5 dual-wheel 50 mm diameter PU casters with 360-degree swivel housings, non-marking tread
Integrated lumbar support	Fixed-position padded lumbar panel on lower backrest, 80 mm thick at support point
Fixed armrest support	Stationary T-shaped arm supports set 200 mm above seat surface, 250 mm long arm pads
Tilt mechanism plate width	180 mm

PRODUCT MODULE 05 / 06

Packaging & Logistics

Verified carton / gross weight / assembly / loading data

Data source: Reference for export quotations and container planning.

Packing configuration	1 piece per carton, flat-pack knock-down
Carton dimensions	650 x 520 x 350 mm
Gross weight per carton	17 kg
Volume per carton (CBM)	0.118 m³
Assembly time	30 minutes
20ft container loading quantity	160 pieces
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

PRODUCT MODULE 06 / 06

Applications & Usage

Recommended spaces / users / usage modes

Data source: Recommended applications based on product form and category.

Executive office suites	Suitable for private manager and executive office rooms as primary task and guest seating
Conference and meeting rooms	Appropriate for conference table seating for extended meeting attendees
Home office workstations	Suitable for home office desks for daily computer work
Reception and visitor areas	Works as visitor seating in reception and waiting areas
Open-plan workspaces	Compatible with open office bench desks for regular full-time employees
Executive private offices	Suitable for manager and C-suite private office suites as primary task seating
Conference meeting rooms	Appropriate for conference table seating for attendees of 4 hour meetings
Corporate reception areas	Works as visitor seating in corporate reception and waiting zones

STANDARD S1

EU Market Entry Requirements * EN Standards

EU Market Access Requirements* EN Standards

EN 1335-1:2020	Office furniture - Office chairs - Part 1: Dimensions - Determination of dimensions
EN 1335-2:2019	Office furniture - Office chairs - Part 2: Safety requirements
EN 1022:2021	Furniture - Seating - Test methods for the determination of stability of all seating
EN 1523-1:2021	Furniture - Seating - Test methods for the determination of strength and durability of office chairs and office stool chairs

STANDARD S2

North America Purchasing & Inspection Reference * ANSI/BIFMA Standards

US and Canada office-furniture standards

ANSI/BIFMA X5.1-2017	Office Chairs - Tests
ANSI/BIFMA X5.5-2020	Office Task Chairs - Ergonomic Guidelines

STANDARD S3

Standards Applicable to China-Market Projects * GB Standards

Standards applicable to China-market projects

GB/T 3326-2016	Furniture - Seating - Test methods for determination of stability, strength and durability
GB/T 14530-2008	Furniture - Office chairs - Safety requirements for flammability of upholstered parts
GB 18580-2017	Formaldehyde emission limits for interior decoration materials - Wood-based panels and products
GB/T 26175-2010	Office furniture - Office chairs - Mechanical and structural safety requirements

Standardized tender description text

This product must meet the following technical requirements:
1. GB/T 3326-2016: Furniture - Seating - Test methods for determination of stability, strength and durability;
2. GB/T 14530-2008: Furniture - Office chairs - Safety requirements for flammability of upholstered parts;
3. GB 18580-2017: Formaldehyde emission limits for interior decoration materials - Wood-based panels and products;
4. GB/T 26175-2010: Office furniture - Office chairs - Mechanical and structural safety requirements;
Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.

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Product Description

The GUOYOU OC-MB-001 Black Mid-Back Executive Office Chair with Upholstered Seat and Back presents a sleek, professional silhouette defined by a uniform matte black finish and clean, structured lines. The mid-rise backrest aligns with standard executive seating proportions, paired with contoured padding and neatly stitched upholstery seams for a polished, formal appearance that complements refined workspace aesthetics. The chair features fixed T-shaped armrests with flat, supportive pads, paired with a five-point star base that creates a stable, balanced footprint suited to standard desk and meeting table configurations. The chair is upholstered in smooth black faux leather with a fabric backing, stitched with high-strength polyester thread for durable seam integrity. Its seat core uses 45 kg/m³ high-density molded polyurethane foam at 90 mm thickness, while the contoured backrest uses 35 kg/m³ medium-density molded foam with an integrated 80 mm thick padded lumbar panel for targeted lower back support. The internal structure combines a bent plywood support board reinforced with a steel frame, paired with a black steel synchro-tilt mechanism, chrome-plated Class 3 gas lift, glass fiber-reinforced black nylon five-star base, and dual-wheel non-marking polyurethane casters. Fixed armrests are constructed from rigid black polypropylene with integrated padded top surfaces. Core functional features include a 100 mm vertical seat height adjustment operated by a left-side lever, reaching a maximum seat height of 540 mm, a 12-degree backrest tilt with an upright position lock and six-level tension adjustment, full 360-degree swivel rotation, and smooth-rolling casters suitable for hard flooring and low-pile carpet. The fixed integrated lumbar panel provides consistent lower back support, while stationary armrests positioned 200 mm above the seat surface offer stable forearm rest for typing or casual relaxation. The chair is suited for a wide range of professional and personal work settings, including private executive and manager offices as primary task seating, conference rooms for multi-hour meeting use, home office workstations for daily computer work, formal corporate reception areas as visitor seating, and open-plan workspaces for regular full-time employee use. Its understated, professional finish aligns with modern, elegant, and minimalist office decor schemes. For procurement, the chair ships in knock-down flat-pack configuration for efficient shipping, with a 20-foot container holding up to 160 units. Buyers should note that assembly is required, with single-person assembly taking up to 40 minutes using basic tools, and confirm final material specifications, packaging details, and component ratings with the supplier ahead of bulk order placement to align with project requirements.

Black Mid-Back Executive Office Chair with Upholstered Seat and Back Specifications

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