| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 680 x 650 x 1280 mm | |
|---|---|---|
| Seat width | 520 mm | |
| Seat depth | 500 mm | |
| Seat height range | 540 mm | |
| Backrest height | 620 mm | |
| Backrest width | 500 mm | |
| Headrest dimensions | 320 x 120 mm | |
| Armrest height from seat | 210 mm | |
| 5-star base diameter | 700 mm | |
| Caster diameter | 60 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
| Chair weight range | 18 kg | |
|---|---|---|
| Gas lift travel distance | 100 mm | |
| Seat foam density | 45 kg/m³ | |
| Backrest tilt angle range | 12° | |
| Caster rolling durability | 100000 cycles | |
| Seam stitch pitch | 8 stitches per 50 mm | |
| 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
| Backrest surface | Breathable woven mesh fabric stretched over rigid plastic frame | |
|---|---|---|
| Seat cushion | High-resilience polyurethane foam core wrapped in woven fabric upholstery | |
| Headrest | Foam-padded unit with matching fabric upholstery, mounted on plastic support bracket | |
| Armrests | Light gray hard plastic arm supports with flat plastic top pads | |
| 5-star base | Chrome-plated steel tube frame with polished finish | |
| Gas lift cylinder | Chrome-plated steel pneumatic height-adjustment cylinder | |
| Reclining mechanism | Steel chassis with plastic control levers mounted under seat cushion | |
| Casters | Black polyurethane (PU) wheels with plastic wheel forks | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel | |
| Five-star Base Material Thickness | Metal base wall 3.5 mm; diameter 700 mm |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pneumatic height adjustment via left-side control lever, with 100 mm total vertical travel | |
|---|---|---|
| Backrest tilt function | Synchronous tilt mechanism with multi-position locking, maximum 12° recline from upright | |
| 360-degree swivel | Full continuous rotation around central gas lift axis, enabled by top and bottom bearing sets | |
| Mobility | Five dual-wheel PU casters for smooth rolling on hard floors and low-pile carpets | |
| Headrest support | Fixed-position padded headrest mounted to top of backrest frame for neck support | |
| Fixed armrest support | Rigid fixed armrests providing forearm support at 210 mm above seat surface | |
| 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
| Packaging configuration | 1 carton per unit, flat-pack knockdown design | |
|---|---|---|
| Carton dimensions | 650 x 600 x 350 mm | |
| Gross weight per carton | 20 kg | |
| Carton volume | 0.137 CBM | |
| Assembly time | 30 minutes | |
| 20ft container load quantity | 280 units | |
| 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 |
Recommended spaces / users / usage modes
| Executive office use | Suitable for private executive offices and manager workstations, providing full-back support for extended seated work | |
|---|---|---|
| Open-plan workstations | Suitable for open office environments for full-time employees working 8 hours daily | |
| Meeting and conference rooms | Suitable for conference rooms and meeting spaces for both seated discussion and presentation modes | |
| Home office setup | Suitable for home office use for remote work and study, requiring minimal assembly tools | |
| Commercial coworking spaces | Suitable for shared coworking areas with rotating users, as adjustable height accommodates different body heights | |
| 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
| Safety and durability | Applicable for testing per EN 1335:2020 Clause 6 | |
|---|---|---|
| Dimensions for office use | Applicable for sizing reference per EN 1335:2009 | |
| Flammability of upholstery | Applicable for testing per EN 1021:2014 |
US and Canada office-furniture standards
| General office chair standard | Applicable for testing per ANSI/BIFMA X2021 | |
|---|---|---|
| Seat impact test | Applicable for testing per BIFMA X2021Clause 10 | |
| Backrest durability test | Applicable for testing per BIFMA X2021Clause 11 | |
| Caster durability test | Applicable for testing per BIFMA X2021Clause 16 | |
| Recommended static load capacity | Recommended references: BIFMA X5.1 |
Standards applicable to China-market projects
| Seat and back strength | Applicable for testing per GB/T 35607Clause 5.4 | |
|---|---|---|
| Stability testing | Applicable for testing per GB/T 35607Clause 5.3 | |
| Formaldehyde emission | Applicable for testing per GB 18584Table 1 | |
| Flame retardancy | Applicable for testing per GB 20286Clause 5.2 |
This product must meet the following technical requirements: 1. Seat and back strength: Applicable for testing per GB/T 35607Clause 5.4; 2. Stability testing: Applicable for testing per GB/T 35607Clause 5.3; 3. Formaldehyde emission: Applicable for testing per GB 18584Table 1; 4. Flame retardancy: Applicable for testing per GB 20286Clause 5.2; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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