| Submitted | Field | Original | 修改后参数 | Note / Status |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (W x D x H) | 660 x 680 x 1260mm | |
|---|---|---|
| Seat height (floor to seat top) | 540mm | |
| Seat surface dimensions (W x D) | 500 x 490 mm | |
| Backrest total height (seat top to back top) | 630 mm | |
| Headrest dimensions (W x H) | 330 x 180 mm | |
| Armrest height (seat top to armrest pad top) | 270mm | |
| Five-star base radius (center to caster center) | 320 mm | |
| Caster diameter | 60 mm | |
| Lumbar support protrusion | 40 mm | |
| Upper backrest dimensions (W x H) | 480 x 380mm | |
| Lower backrest dimensions (W x H) | 460 x 220mm | |
| Backrest total height (seat top to headrest top) | 740mm | |
| Armrest pad dimensions (W x D) | 90 x 250mm | |
| Five-star base diameter (caster tip to caster tip) | 650mm | |
| Lumbar support protrusion from back frame | 45mm | |
| Finished Seat Cushion Thickness | 90mm |
Net weight / load capacity / users / durability
| Net weight range | 21kg | |
|---|---|---|
| Recommended maximum user weight | 136 kg | |
| Seat foam static load capacity | 150 kg | |
| Gas lift durability cycles | 120000 up/down cycles | |
| Caster rolling durability | ≥100000 rolling cycles | |
| Backrest tilt lock angle range | 120 degrees from vertical | |
| Recommended maximum static user weight | 136kg | |
| Gas lift durability rating | ≥120000 up/down cycles | |
| Tilt mechanism cycle durability | ≥80000 tilt cycles | |
| Seat Foam Density / Rebound Reference | 45kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Backrest and headrest mesh | Breathable polyester woven mesh, black | |
|---|---|---|
| Seat cushion | 50mm thick high-density molded polyurethane foam, black fabric or PU upholstery | |
| Back frame, armrest supports and base | Reinforced injection-molded nylon, matte black finish | |
| Armrest pads | Soft PU padded surface, 20mm thick | |
| Gas lift cylinder | Chrome-plated steel, Class 3 pressure rating, 50mm outer diameter, 100mm stroke | |
| Tilt mechanism chassis | 2.5mm thick stamped steel, black powder-coated finish | |
| Casters | 60mm diameter twin-wheel PU casters, black, brake-free universal type | |
| Integrated lumbar pad | Injection-molded PP with padded mesh overlay, black | |
| Backrest and headrest upholstery | Breathable woven polyester mesh, matte black, 1.2mm mesh strand thickness | |
| Seat cushion core | 50mm thick high-density molded polyurethane foam, 45kg/m³ density, 45% rebound rate | |
| Seat upholstery | Woven black polyester fabric, 0.8mm thickness, ≥30000 cycle Martindale abrasion rating | |
| Structural frame (back supports, armrest uprights, seat pan) | Reinforced injection-molded nylon PA6, matte black finish, 3mm wall thickness |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | 100mm vertical travel via right-side pneumatic adjustment lever, locks at any position within range | |
|---|---|---|
| Headrest adjustment | 45 degree tilt angle adjustment + 50mm height adjustment via friction lock joint, supports custom neck position | |
| Armrest adjustment | 60mm vertical height adjustment, 3 lock positions to match desk height and elbow support needs | |
| Backrest tilt function | Synchro-tilt mechanism with 1:1.6 seat-to-back tilt ratio, locks in upright position and 3 intermediate recline positions via seat-side lever | |
| Tilt tension adjustment | Rotary tension knob under front of seat adjusts recline resistance to match user weight (120kg user range) | |
| 360 degree swivel function | Full 360 degree horizontal rotation via swivel joint between seat and gas lift, no rotation lock | |
| Rolling mobility | Smooth rolling on hard floors and low-pile carpet via 5 universal twin-wheel casters, no caster brakes visible | |
| Lumbar support | Fixed convex lumbar pad positioned at L3-L4 spinal curve, provides consistent lower back support without separate adjustment | |
| 360° swivel function | Full unrestricted 360° horizontal rotation via precision ball bearing swivel joint between seat pan and gas lift, no rotation lock | |
| Mobility function | Unobstructed rolling on hard flooring (wood, tile) and low-pile (≤6mm pile height) carpet via 5 universal twin-wheel PU casters, no visible caster brake mechanisms | |
| Lumbar support function | Fixed convex dual-zone lumbar pad positioned to align with L3-L4 vertebrae, 45mm protrusion provides consistent lower back pressure without independent height/depth adjustment | |
| Recline Angle / Lock Reference | 125° with 3 suggested lock positions |
Verified carton / gross weight / assembly / loading data
| Packaging method | Knock-down (KD) flat pack, components wrapped in PE foam and polybag for scratch protection, corrugated outer carton | |
|---|---|---|
| Number of packages | 1 carton per chair | |
| Reference carton dimensions (L x W x H) | 830 x 650 x 360 mm | |
| Reference gross weight per unit | 24kg | |
| Reference carton CBM per unit | 0.194 CBM | |
| Indicative container loading quantity | 280 units per 40HQ container, 130 units per 20GP container | |
| Estimated assembly time | 25minutes per unit, requires only included Allen key, no additional special tools | |
| Reference Package Count | 1 set / 2 cartons | |
| Reference Assembly Time | 40minutes per set | |
| Reference Carton Dimensions | 850 × 420 × 720mm |
Recommended spaces / users / usage modes
| Office open workstations | Suitable for 8 hour daily desk work, breathable mesh back reduces heat buildup for extended seated use | |
|---|---|---|
| Home office study spaces | Compact 680mm width fits small home work areas, black matte finish matches most home decor schemes, PU casters do not scratch wood or tile residential flooring | |
| Meeting and conference rooms | Professional black appearance suitable for meeting spaces, swivel and tilt functions support comfortable posture during long meetings | |
| Shared hot-desking environments | Durable mesh and nylon construction withstands frequent user adjustment and shared use, easy to clean surfaces for high-traffic areas | |
| Call center workstations | Adjustable seat height, armrests and lumbar support reduce fatigue for prolonged seated shifts, silent casters minimize workspace noise | |
| Open-plan office workstations | Suitable for 8-hour daily seated desk work, breathable mesh back reduces heat buildup during extended use, 100mm height adjustment fits 760mm standard office desk heights | |
| Call center and shift-work workstations | Adjustable seat height, armrests and lumbar support reduce musculoskeletal fatigue during 8+ hour seated shifts, smooth PU casters operate silently to minimize workspace noise | |
| Training room seating | Rolling casters allow easy reconfiguration of seating layouts for training sessions, stackable KD packaging simplifies bulk storage for facilities teams |
European market access and chemical requirements
| EN 1335-1:2020 | Applicable office chair standard: dimensional, safety and strength requirements for office work chairs | |
|---|---|---|
| EN 1335-2:2018 | Applicable office chair standard: stability, static load and durability test requirements for seated use | |
| EN 1022:2018 | Applicable domestic and contract furniture standard: chair stability test requirements for forward, rearward and side loading |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Applicable standard for office chairs: general purpose office chair strength, durability and stability test requirements, including backrest load, caster durability and base static load |
|---|
Standards applicable to China-market projects
| GB/T 3326-2016 | Applicable standard for office furniture: chair dimensions, minimum and adjustment range for seat height, seat depth, backrest height must comply with standard adult office chair requirements | |
|---|---|---|
| GB/T 3324-2017 | Applicable general technical standard for metal and plastic furniture: surface finish quality, structural stability, edge safety requirements | |
| GB 18584-2001 | Applicable indoor decoration material standard: formaldehyde emission and heavy metal content limits for furniture upholstery and plastic components |
This product must meet the following technical requirements: 1. GB/T 3326-2016: Applicable standard for office furniture: chair dimensions, minimum and adjustment range for seat height, seat depth, backrest height must comply with standard adult office chair requirements; 2. GB/T 3324-2017: Applicable general technical standard for metal and plastic furniture: surface finish quality, structural stability, edge safety requirements; 3. GB 18584-2001: Applicable indoor decoration material standard: formaldehyde emission and heavy metal content limits for furniture upholstery and plastic components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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