| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 620 x 670 x 1240 mm | |
|---|---|---|
| Seat width | 490 mm | |
| Seat depth | 420 mm | |
| Seat height range (seat to floor) | 670 mm | |
| Backrest width | 450 mm | |
| Backrest height (seat to top of back) | 530 mm | |
| Seat cushion thickness | 60 mm | |
| Armrest height above seat | 180 mm | |
| Armrest-to-armrest outer width | 580 mm | |
| Five-star base total width | 620 mm | |
| Headrest width | 285 mm | |
| Headrest height above seat (max extended) | 510 mm | |
| Total height without headrest extended | 1160 mm | |
| Finished Seat Cushion Thickness | 90 mm | |
| Backrest Padding Thickness | 70 mm | |
| Lumbar Support Zone Height | 240 mm |
Net weight / load capacity / users / durability
| Recommended user weight capacity | 150 kg | |
|---|---|---|
| Chair net weight | 15 kg | |
| Seat foam density | 45 kg/m³ | |
| Seat foam rebound rate | 40% | |
| Mesh backrest breathability rating | Grade 4 air permeability | |
| Seam stitch pitch | 10 stitches per 30mm | |
| Upholstery abrasion resistance | 100000 rub cycles | |
| Gas lift rated lifecycle | 120000 up/down cycles | |
| Caster rolling durability | 100000 roll cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Backrest upholstery | Tensioned breathable woven polyester mesh | |
|---|---|---|
| Backrest frame | Nylon (PA6) with 20% glass fiber reinforcement | |
| Seat cushion core | Cold-cured high-density polyurethane foam | |
| Seat upholstery surface | Woven black fabric over foam cushion | |
| Armrests | Integral molded black polypropylene fixed loop armrests | |
| Headrest upholstery | Curved breathable mesh panel with molded nylon frame | |
| Five-star base | Molded black nylon (PA) 5-prong swivel base | |
| Gas lift column | Black powder-coated steel Class 3 gas lift | |
| Caster wheels | 60mm diameter black polyurethane (PU) dual-wheel casters | |
| Tilt mechanism | 3mm thick stamped steel chassis with tension adjust | |
| Internal seat support plate | 12mm thick molded plywood seat board | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pneumatic height adjustment via right-side lever, 100mm stroke | |
|---|---|---|
| Backrest tilt function | 1-position lockable recline with tension adjustment, 12° recline angle | |
| 360-degree swivel | Full rotation around central gas lift column for easy positioning | |
| Headrest adjustment | Height-adjustable curved headrest with 80mm vertical travel | |
| Lumbar support | Integrated contoured lumbar support molded into backrest frame | |
| Smooth mobility | Dual-wheel PU casters roll on hard floors and low-pile carpet | |
| Fixed arm support | Fixed-height loop armrests provide stable forearm support during typing | |
| 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
| Open-plan office workstations | Suits daily 8-hour desk work for administrative and clerical staff | |
|---|---|---|
| Home office study spaces | Compact 620mm base fits small home desk footprints without clutter | |
| Meeting and conference rooms | Uniform black finish and simple design match standard conference room decor | |
| Training room seating | Durable mesh construction withstands regular multi-user turnover | |
| Student dormitory study areas | Height adjustment fits varying desk heights for student use | |
| 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 | Applies to office work chair dimensional and structural safety requirements | |
|---|---|---|
| EN 1335-2:2018 | Applies to office chair mechanical performance and stability testing | |
| EN 1021-1:2014 | Applies to upholstered furniture ignition resistance (smoldering cigarette) |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applies to general-purpose office chair safety and performance criteria |
|---|
Standards applicable to China-market projects
| GB/T 3326-2016 | Applies to office chair dimensional accuracy and stability testing requirements | |
|---|---|---|
| GB/T 10357.3-2013 | Applies to office chair mechanical strength and durability test methods | |
| GB 18584-2001 | Applies to furniture formaldehyde emission limits for indoor use |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applies to office chair dimensional accuracy and stability testing requirements; 2. GB/T 10357.3-2013: Applies to office chair mechanical strength and durability test methods; 3. GB 18584-2001: Applies to furniture formaldehyde emission limits for indoor use; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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