| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 640 x 680 x 1020 mm | |
|---|---|---|
| Seat width | 520 mm | |
| Seat depth | 480 mm | |
| Seat height adjustment range | 520 mm | |
| Backrest height | 520 mm | |
| Backrest width | 490 mm | |
| Fixed armrest height above seat | 200 mm | |
| Armrest width | 80 mm | |
| Five-star base diameter | 700 mm | |
| Caster diameter | 50 mm | |
| Seat cushion thickness | 80 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 | |
|---|---|---|
| Net product weight | 18 kg | |
| Seat foam density | 45 kg/m³ | |
| Backrest foam density | 35 kg/m³ | |
| Foam rebound rate | 45% | |
| Tilt mechanism static load rating | 250 kg | |
| Five-star base static load rating | 1136 kg | |
| Seam stitch pitch | 8 stitches per 30mm | |
| Upholstery abrasion resistance (Martindale) | 50000 cycles | |
| Warranty period for structural components | 3 years |
Core acceptance fields · Panels / hardware / frame / upholstery
| Back and seat shell | 12mm thick bent plywood with high gloss walnut wood grain veneer finish | |
|---|---|---|
| Upholstery covering | 1.2mm thick tan PU leather with visible edge stitching | |
| Seat padding | High density polyurethane foam wrapped in soft dacron layer | |
| Back padding | Shaped high density polyurethane foam | |
| Five-star base | 2mm thick polished chrome plated steel, polished mirror finish | |
| Height adjustment gas lift | Class 3 steel gas lift, 50mm outer diameter, 100mm vertical stroke | |
| Tilt mechanism | 3mm thick black powder coated steel multi-function tilt mechanism | |
| Casters | Black PU twin-wheel casters with chrome mounting stems, soft tread for hard floors | |
| Integrated armrests | Bentwood frame wrapped in matching tan PU upholstery, fixed position integrated with chair shell | |
| Edge trim | Matching tan PU welt trim along bent shell upholstery edges | |
| 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 height adjustment via right-side lever, 100mm total vertical travel | |
|---|---|---|
| 360 degree swivel rotation | Full 360 degree rotation around vertical axis enabled by central gas lift bearing | |
| Backrest tilt function | Tilt with 12 degree maximum backward recline, lockable in upright position | |
| Smooth rolling mobility | Five dual-wheel casters enable omnidirectional movement on hard floors and low-pile carpet | |
| Integrated fixed arm support | Contoured fixed armrests provide continuous forearm support aligned to standard desktop height | |
| Cutout ergonomic design | Open cutout between seat and armrest/back junction reduces material weight and provides hip clearance | |
| Tilt tension adjustment | Tension knob under seat adjusts recline resistance to match user 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 |
Verified carton / gross weight / assembly / loading data
| Number of shipping cartons | 1 carton | |
|---|---|---|
| Shipping carton dimensions | 850 x 650 x 550 mm | |
| Gross shipping weight | 22 kg | |
| Shipping volume (CBM) | 0.304 CBM | |
| Assembly time | 20 minutes | |
| 20ft GP container loading quantity | 108 units | |
| 40ft HQ container loading quantity | 270 units | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set | |
| Reference Carton Dimensions | 850× 420× 720 mm |
Recommended spaces / users / usage modes
| Executive private office | Ideal for manager and executive private offices, combining premium walnut bentwood and tan leather aesthetic with ergonomic adjustment for all-day desk work | |
|---|---|---|
| Boardroom and conference rooms | Suitable for boardroom and conference seating, mid-back design provides support during long meetings without blocking sightlines across the table | |
| Home office study | Well suited for premium home office spaces, modern sculptural design complements residential interiors while providing commercial-grade ergonomic support | |
| Client reception and meeting areas | Appropriate for client-facing meeting spaces, professional appearance creates a polished impression for visiting guests | |
| Hotel business center workstations | Suitable for hotel business center seating, durable PU upholstery withstands frequent use by rotating guests, while caster base allows easy repositioning | |
| Creative studio and design offices | Fits contemporary creative office environments, warm wood and leather finish balances modern design with functional workplace performance | |
| 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 | Applicable standards and test results require confirmation | |
|---|---|---|
| EN 1335-2:2018 | Office furniture - Office work chairs - Part 2: Safety requirements, applicable for structural stability, strength and component safety verification | |
| EN 1335-3:2009 | Office furniture - Office work chairs - Part 3: Test methods, applicable for durability and strength testing of all load-bearing components |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1 Test 5:2017 | Seat static load test, applicable to verify seat structure supports 1134 kg static load without failure |
|---|
Standards applicable to China-market projects
| GB 18584-2001 | Standard for limit of harmful substances in wooden furniture, applicable for formaldehyde emission limits for the bent plywood shell component | |
|---|---|---|
| GB/T 10357.3-2013 | Furniture mechanical performance test for chairs and stools, applicable for static load, impact and fatigue testing of seat, back and armrests |
This product must meet the following technical requirements: 1. GB 18584-2001: Standard for limit of harmful substances in wooden furniture, applicable for formaldehyde emission limits for the bent plywood shell component; 2. GB/T 10357.3-2013: Furniture mechanical performance test for chairs and stools, applicable for static load, impact and fatigue testing of seat, back and armrests; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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