| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 530 x 560 x 880 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
| Product net weight | 12 kg | |
|---|---|---|
| Maximum static load capacity | 80 kg | |
| Height adjustment positions | 8 | |
| Backrest tilt lock range | 15 degrees | |
| Recommended user age range | 12 years | |
| Caster rolling durability | 20000 cycles | |
| Seat foam density | 40 kg/m³ | |
| Seat foam thickness | 60 mm | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat padding | High-resilience polyurethane foam | |
|---|---|---|
| Backrest padding | High-resilience polyurethane foam | |
| Upholstery fabric | Stain-resistant woven polyester | |
| Support frame posts | Powder-coated steel tubing | |
| Base chassis | Injection-molded polypropylene | |
| Adjustment knobs | Injection-molded ABS plastic | |
| Caster wheels | Polyurethane tread with polypropylene hub | |
| Adjustment bushings | Nylon wear-resistant sleeves | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Gas-lift Engineering Specification | Recommended Class 4; outer tube 50 mm; stroke 100 mm | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | Pin-lock manual adjustment with 200mm total travel | |
|---|---|---|
| Backrest angle adjustment | 15-degree forward/back tilt lockable at 3 positions | |
| 360-degree swivel rotation | Smooth rotating base under seat | |
| Brake casters | Weight-activated auto-lock casters | |
| Color customization | 3 available color options (pink, blue, lime green) | |
| 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
| Home children’s study space | Paired with height-adjustable study desks for daily homework, reading and remote learning | |
|---|---|---|
| Primary school classroom | Used in student activity rooms or dedicated ergonomic learning zones for young pupils | |
| Children’s training institution | Deployed in tutoring centers or art studios for child users aged 3 to 12 | |
| Recommended configuration | Paired with 760 mm height adjustable children desks to match seat height range | |
| User group | Designed for children 160 cm tall to maintain neutral seated posture during study | |
| 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
| Furniture safety standard | EN 1729:2015 | |
|---|---|---|
| Chair stability standard | EN 1022:2018 |
Standards applicable to China-market projects
| General safety requirement | GB 28007 | |
|---|---|---|
| Surface coating limit | GB 18584 |
This product must meet the following technical requirements: 1. General safety requirement: GB 28007; 2. Surface coating limit: GB 18584; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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