| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W x D x H) | 670 x 700 x 1200 mm | |
|---|---|---|
| Seat width | 510 mm | |
| Seat depth | 500 mm | |
| Seat height adjustment range | 520 mm | |
| Backrest height | 730 mm | |
| Backrest width | 500 mm | |
| Armrest height above seat | 80 mm fixed height | |
| Armrest pad dimensions | 250 x 80 mm | |
| Five-star base radius | 350 mm from center stem to caster | |
| Caster diameter | 50 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
| Net weight range | 23 kg | |
|---|---|---|
| Recommended maximum user weight | 150 kg | |
| Tilt tension adjustment range | 12degrees of backrest recline | |
| Gas lift stroke length | 100 mm | |
| Caster rolling durability | Minimum 40,000 rolling cycles | |
| Seat foam static load rating | 1000 N static load without permanent deformation | |
| Base static load rating | 1130 kg static load | |
| 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 |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest upholstery | Top-grain genuine leather or high-grade PU leather, taupe/brown color, stitched segmented channel tufting | |
|---|---|---|
| Seat and back cushion foam | High-density polyurethane foam, 60 mm thick on seat, 50 mm thick on back, density 45 kg/m³ for seat, 35 kg/m³ for back, rebound rate ≥40% | |
| Internal back frame | 1.5 mm thick molded plywood or steel tube frame, covered with foam and upholstery | |
| Armrest structure | Polypropylene (PP) arm supports with polished chrome decorative side trim, padded arm tops covered in matching upholstery | |
| Gas lift cylinder | Chrome-plated steel, Class 3 safety rating, 50 mm outer diameter, standard SGS/BIFMA-compliant construction | |
| Tilt mechanism | 3 mm thick stamped steel synchro-tilt chassis, black powder-coated finish, with tension adjustment knob and tilt lock lever | |
| Five-star base | Polished die-cast aluminum alloy, 3 mm wall thickness at leg sections, polished chrome finish | |
| Caster wheels | Black nylon (PA66) housing, polyurethane (PU) rolling surface, twin-wheel design, brake-free standard casters | |
| Upholstery stitching | Nylon/polyester thread, seam pitch 8stitches per inch, edge-stitched panel seams | |
| 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
| Seat height adjustment | Pneumatic height adjustment via right-hand under-seat lever, 100 mm total vertical stroke, locks at any height within range | |
|---|---|---|
| Backrest tilt function | Synchro tilt with 1:2.2 seat-to-back tilt ratio, adjustable tension via under-seat knob to match user weight, locks in upright position via secondary lever | |
| Mobility function | Smooth rolling on all five twin-wheel casters, suitable for low-pile carpet and hard flooring surfaces (with optional hard-floor caster upgrade) | |
| Fixed padded armrests | Non-adjustable fixed armrests, provide static forearm support to reduce shoulder strain during typing | |
| Lumbar support | Built-in segmented upholstered lumbar support formed by backrest stitching channels, no adjustable lumbar mechanism | |
| Seat waterfall edge | Curved front seat edge to reduce pressure on back of thighs and improve blood circulation during extended sitting | |
| 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, knock-down (KD) packing | |
|---|---|---|
| Reference carton dimensions | 850 x 680 x 620 mm | |
| Reference gross shipping weight | 26 kg | |
| Reference shipping volume (CBM) | 0.36 CBM per unit | |
| assembly time | 25 minutes per unit, using standard Allen key (included in hardware kit) | |
| Reference 20ft GP container loading quantity | 200units | |
| Reference 40ft HQ container loading quantity | 470units | |
| Packaging materials | 5-layer corrugated carton, internal EPS foam corner protection, PE plastic wrap for upholstery, separate sealed hardware bag with tools and instructions | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive office space | Suitable for private executive offices and manager workstations, provides professional appearance and support for 8 hour daily work use | |
|---|---|---|
| Conference/meeting rooms | Appropriate for boardroom and formal conference room seating, pairs with standard conference tables at 760 mm height | |
| Home office use | Suitable for premium home office setups, neutral taupe color coordinates with classic and modern desk finishes | |
| Reception/visitor areas | Can be used for high-end reception spaces where a professional, welcoming seating option is required for guests | |
| Target user group | Designed for adult office workers 190 cm tall, standard weight range up to 150 kg | |
| 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 reference for office chair dimensional safety and design requirements, specifies minimum clearance, adjustment range, and structural dimension standards | |
|---|---|---|
| EN 1335-2:2018 | Applicable reference for office chair mechanical safety performance, specifies static load, fatigue test, and stability requirements for office seating | |
| EN 1335-3:2020 | Applicable reference for office chair test methods, specifies standardized procedures for verifying strength, durability, and stability |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applicable reference for general-purpose office chair performance, specifies minimum requirements for strength, durability, and stability for office chairs intended for 8-hour daily use | |
|---|---|---|
| ANSI/BIFMA X5.11-2015 | Applicable reference if rated for users over 136 kg, specifies enhanced load and durability requirements for heavy-duty office seating |
Standards applicable to China-market projects
| GB/T 3326-2016 | Applicable reference for office chair dimensional accuracy and stability acceptance, specifies tolerance for seat height, width, depth and structural stability requirements | |
|---|---|---|
| GB/T 38610-2020 | Applicable reference for leather office chair upholstery performance, specifies requirements for leather abrasion resistance, color fastness, and tear strength | |
| GB 28007-2011 | Applicable reference for office chair mechanical safety, specifies requirements for structural strength, edge safety, and caster load performance |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applicable reference for office chair dimensional accuracy and stability acceptance, specifies tolerance for seat height, width, depth and structural stability requirements; 2. GB/T 38610-2020: Applicable reference for leather office chair upholstery performance, specifies requirements for leather abrasion resistance, color fastness, and tear strength; 3. GB 28007-2011: Applicable reference for office chair mechanical safety, specifies requirements for structural strength, edge safety, and caster load performance; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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