| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (max height) | 710 x 730 x 1260 mm | |
|---|---|---|
| Seat width | 510 mm | |
| Seat depth | 510 mm | |
| Seat height adjustment range | 520 mm | |
| Backrest total height (from seat pan) | 850 mm | |
| Armrest height (from seat) | 200 mm | |
| Five-star base diameter | 700 mm | |
| Caster wheel diameter | 65 mm | |
| Headrest dimensions | 320 x 180 mm | |
| Seat cushion thickness (front edge) | 100 mm | |
| Backrest padding thickness | 80 mm | |
| Armrest pad dimensions | 250 x 80 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Lumbar Support Zone Height | 240 mm | |
| Clear Width Between Armrests | 540 mm |
Net weight / load capacity / users / durability
| Recommended maximum user weight | 159 kg | |
|---|---|---|
| Chair net weight reference | 27 kg | |
| Swivel rotation | 360 degrees | |
| Tilt recline maximum angle | 18 degrees | |
| Seat foam density | 45 kg/m³ | |
| Foam rebound rate | 60% | |
| Static load rating for five-star base | 1134 kg | |
| Caster rolling durability | 100000 cycles | |
| Upholstery abrasion resistance | 50000 double rubs | |
| Seam stitch pitch | 8 stitches per 30 mm |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Cognac brown top-grain leather match | |
|---|---|---|
| Side shell frame | Walnut-stained bent plywood | |
| Seat cushion core | 45D high-density molded polyurethane foam | |
| Backrest cushion core | 40D high-resilience polyurethane foam | |
| Five-star base | Polished die-cast aluminum alloy | |
| Height adjustment gas lift | Class 4 chrome-plated steel gas lift | |
| Tilt-swivel mechanism | 2.5 mm thick black powder-coated steel plate | |
| Armrest pads | Leather-wrapped high-density foam, fixed to wood shell | |
| Caster wheels | Black dual-wheel nylon casters | |
| Internal support frame | 15 mm thick engineered plywood seat pan | |
| Finish on wood shell | Matte walnut veneer finish | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Pneumatic seat height adjustment | 100 mm vertical travel via Class 4 gas lift, controlled by side lever to align seat height with desk and user leg length | |
|---|---|---|
| Synchro-tilt recline | Synchronized back and seat tilt with 18 degree maximum back recline and matching 6 degree seat tilt, reducing pressure on thighs when reclining | |
| Tilt tension adjustment | Rotary knob under seat adjusts recline resistance to match user body weight, preventing too-fast or too-stiff recline motion | |
| Multi-position tilt lock | Locks recline in upright position and up to 3 intermediate reclined positions for preferred working or resting posture | |
| 360 degree swivel rotation | Full rotational movement around vertical axis, allowing easy access to all areas of a workstation without moving the base | |
| Smooth rolling mobility | Dual-wheel casters roll freely on hard wood, tile and low-pile carpet floors, with 360 degree caster swivel for easy direction changes | |
| Integrated ergonomic lumbar support | Contoured curved backrest shape provides built-in lumbar support aligned to natural lower back curve, no separate adjustable lumbar pad | |
| Integrated headrest support | Fixed curved padded headrest at top of back supports cervical spine during upright work and reclined rest positions, no separate headrest adjustment | |
| Fixed padded armrests | Curved armrests integrated with wood shell support forearms during typing and desk work, maintaining fixed position aligned with standard desk heights | |
| Waterfall seat edge | Rounded front seat edge reduces pressure on the back of the knees, improving leg circulation during long periods of sitting | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg |
Verified carton / gross weight / assembly / loading data
| Packaging configuration | 1 single carton, knocked-down assembly with chair back/seat assembly, base, gas lift, casters and hardware separated and wrapped | |
|---|---|---|
| Carton outer dimensions | 850 x 700 x 450 mm | |
| Gross weight per carton | 30 kg | |
| Packaging volume (CBM) | 0.27 CBM | |
| Assembly time (single adult) | 50 minutes | |
| 20ft GP container loading quantity | 110 units | |
| 40ft HQ container loading quantity | 270 units | |
| Internal packaging materials | 5 mm thick foam wrapping on all wood and leather surfaces, plastic corner protectors, polybag for hardware kit | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40 minutes per set |
Recommended spaces / users / usage modes
| Executive private office | Suitable for manager and executive private offices, with premium cognac leather and walnut wood finish matching professional upscale office interiors | |
|---|---|---|
| Home office workspace | Appropriate for high-end home offices, combining ergonomic support with mid-century modern aesthetic suitable for both work and residential decor | |
| Conference room seating | Can be used in boardrooms and executive conference rooms for long meeting durations, with swivel and recline support for multi-hour use | |
| Consultation and client meeting spaces | Welcoming professional appearance for client-facing offices, creating a polished impression while maintaining comfort for guests | |
| Height-matched work surfaces | Designed for use with standard 760 mm height executive desks, with fixed armrest height that fits under most desk surfaces when chair is set to mid-height position | |
| User height range | Suitable for users 190 cm tall, with adjustable seat height and tall backrest covering a wide range of adult body sizes | |
| Daily usage duration | Rated for 8+ hours of daily office use, with high-density foam and durable construction suited for full-time workstations | |
| Recommended Matching Desk Size | 2.4 m executive desk |
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 stability, strength and durability safety testing | |
| EN 1021-1:2014 | Furniture - Assessment of ignitability of upholstered furniture - Part 1: Ignition source smouldering cigarette, recommended for upholstery fire safety compliance |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 Clause 5 | Back strength test requirement of 667 N force applied to backrest without structural failure, applicable for long-term recline use |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to the bentwood shell structural performance and finish quality | |
|---|---|---|
| GB/T 35607-2017 | Green product evaluation specification for furniture, recommended for testing formaldehyde and harmful substance emissions from upholstery and wood components | |
| GB/T 10357.3-2013 | Test method for furniture mechanical performance of chairs and stools, applicable for static load, durability and stability testing of chair structure |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to the bentwood shell structural performance and finish quality; 2. GB/T 35607-2017: Green product evaluation specification for furniture, recommended for testing formaldehyde and harmful substance emissions from upholstery and wood components; 3. GB/T 10357.3-2013: Test method for furniture mechanical performance of chairs and stools, applicable for static load, durability and stability testing of chair structure; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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