| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| overall dimensions | 870 x 900 x 1280 mm | |
|---|---|---|
| seat height adjustment range | 500 mm | |
| seat depth | 550 mm | |
| backrest height | 780 mm | |
| seat width | 580 mm | |
| 5-star base diameter | 840 mm | |
| armrest height above seat | 220 mm | |
| caster diameter | 60 mm | |
| seat padding thickness | 120 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 user weight capacity | 150 kg | |
|---|---|---|
| net weight | 60 kg | |
| foam compression durability | 300000 cycles | |
| swivel rotation | 360° | |
| casing rolling durability | 50000 cycles | |
| 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/back upholstery | Top-grain cowhide leather | |
|---|---|---|
| seat/back internal frame | 18 mm thick bent plywood | |
| seat/back padding | 40# high-resilience fire-retardant molded foam | |
| armrests | Solid polished hardwood, curved fixed design | |
| 5-star base | Solid varnished hardwood, 5-prong design | |
| gas lift | Class 3 explosion-proof steel gas lift | |
| tilt mechanism | 3 mm thick steel synchro-tilt locking chassis | |
| casters | 60 mm PU-wrapped nylon casters | |
| stitching details | 8 stitches per inch uniform reinforced seam | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Five-star Base Material Thickness | Metal base wall 3.5 mm; diameter 700 mm |
Adjustment / rotation / tilt / mobility / storage features
| height adjustment | 100 mm stroke gas lift, actuated by seat-side lever | |
|---|---|---|
| recline function | 135° maximum tilt with multi-position lock, adjusted by side knob | |
| swivel function | 360° unlimited rotation via central steel stem | |
| rolling mobility | Smooth omnidirectional movement via 5 dual casters | |
| tilt tension adjustment | User-adjustable resistance knob to match user weight | |
| fixed arm support | Padded curved wood armrests for stable forearm rest | |
| maximum recline angle | 135° | |
| 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
| executive office use | Suitable for private manager/executive offices, formal traditional aesthetic | |
|---|---|---|
| home office use | Suitable for premium home study workspaces requiring long-session comfort | |
| conference room use | Suitable for boardroom or senior meeting room seating | |
| target user group | Designed for adult office workers weighing up to 150 kg | |
| floor compatibility | Suitable for hardwood, tile and low-pile carpet floors | |
| 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 1335-1:2000 | Applicable European standard for office chair dimensional ergonomic requirements | |
|---|---|---|
| EN 1335-2:2009 | Applicable European standard for office chair safety performance requirements | |
| EN 1335-3:2009 | Applicable European standard for office chair structural test methods |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applicable North American standard for office chair durability, strength and stability |
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Standards applicable to China-market projects
| GB/T 3324-2017 | Applicable general technical standard for wooden furniture hardware and finish quality |
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This product must meet the following technical requirements: 1. GB/T 3324-2017: Applicable general technical standard for wooden furniture hardware and finish quality; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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