| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W x D x H) | 660 x 660 x 1100 mm | |
|---|---|---|
| Seat width | 500 mm | |
| Seat depth | 480 mm | |
| Seat height adjustment range | 520 mm | |
| Backrest height (from seat surface) | 600 mm | |
| Five-star base footprint diameter | 700 mm | |
| Fixed armrest height from seat surface | 220 mm | |
| Caster diameter | 60 mm | |
| Lumbar pad height from seat surface | 200 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Recommended maximum user weight | 150 kg | |
|---|---|---|
| Chair net weight | 13 kg | |
| Seat cushion static load capacity | 200 kg | |
| Caster rolling durability | 100000 cycles | |
| Caster obstacle pass durability | 1000 cycles | |
| Product warranty period | 5 years | |
| 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat cushion upholstery | Black woven polyester fabric, 0.8mm thickness | |
|---|---|---|
| Seat cushion padding | 55 kg/m³ high-density molded polyurethane foam, 60mm thickness | |
| Backrest padding | 40 mm thick high-resilience polyurethane foam, 45 kg/m³ density | |
| Seat internal support plate | 12 mm thick plywood panel embedded under seat foam | |
| Back frame and lumbar support frame | 30% glass fiber reinforced nylon (PA+GF30) | |
| Armrests | Injection-molded black polypropylene (PP) fixed loop structure | |
| Five-star base | Injection-molded black nylon, 3.0mm wall thickness | |
| Gas lift cylinder | Class 4 steel gas lift, 2.5mm wall thickness, 50mm outer diameter | |
| Casters | Black hard nylon swivel casters, twin-wheel design | |
| Seam stitch pitch | 8 mm | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pneumatic gas lift adjustment via right-side lever, 100mm total travel | |
|---|---|---|
| Back tilt function | 3-position lockable synchro-tilt, maximum 121° recline angle | |
| 360-degree swivel rotation | Full 360° horizontal rotation around central gas lift column | |
| Rolling mobility | Smooth rolling on hard floors and low-pile carpet via five twin-wheel casters | |
| Dual-split upper back support | Independent padded back panels for bilateral upper back muscle pressure relief | |
| Dedicated lumbar support | Fixed contoured lumbar pad aligned to natural lower back lordosis | |
| Fixed armrest support | Rigid loop armrests providing stable forearm support during typing tasks | |
| Tilt tension adjustment | Rotary tension knob under seat adjusts recline resistance for different user weights | |
| 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 |
Verified carton / gross weight / assembly / loading data
| 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 |
Recommended spaces / users / usage modes
| Open plan office workstations | Suitable for long-duration daily computer work with lumbar and back support | |
|---|---|---|
| Home office dedicated workspaces | Compact footprint fits standard desk setups for remote work use | |
| Meeting room and conference areas | Durable construction supports frequent use by rotating meeting attendees | |
| Shared co-working spaces | Smooth mobility and simple adjustment work for varied user needs | |
| Study rooms for students and teleworkers | Ergonomic support reduces fatigue during extended study or work sessions | |
| Recommended Matching Desk Size | 2.4 m executive desk | |
| Reference Daily Use Duration | 8 hours/day; confirm by ergonomic testing |
EU Market Access Requirements* EN Standards
| EN 1335-1:2020 | Applies to office chair dimensional safety and ergonomic performance requirements | |
|---|---|---|
| EN 1335-2:2009 | Applies to office chair mechanical strength and durability performance requirements | |
| EN 1021-1:2014 | Applies to upholstered furniture ignition resistance for smoldering cigarette sources |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chair structural durability and load test requirements |
|---|
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to office chair dimensional accuracy and structural stability requirements | |
|---|---|---|
| GB/T 10357.3-2013 | Applies to mechanical performance test methods for chair seating and back strength | |
| GB 18584-2001 | Applies to indoor furniture formaldehyde emission limit requirements |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to office chair dimensional accuracy and structural stability requirements; 2. GB/T 10357.3-2013: Applies to mechanical performance test methods for chair seating and back strength; 3. GB 18584-2001: Applies to indoor furniture formaldehyde emission limit requirements; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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