| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions (lowest seat setting) | 580 x 620 x 820 mm | |
|---|---|---|
| Seat cushion dimensions | 450 x 420 mm | |
| Maximum seat height (from floor) | 550 mm | |
| Minimum seat height (from floor) | 340 mm | |
| Maximum backrest height (from floor) | 920 mm | |
| Minimum backrest height (from floor) | 730 mm | |
| Maximum seat depth adjustment travel | 80 mm | |
| Five-star base diameter | 600 mm | |
| Single backrest pad dimensions | 180 x 320 mm | |
| Seat cushion edge thickness | 60 mm | |
| 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 | 18 kg | |
|---|---|---|
| Maximum static load capacity | 150 kg | |
| Suitable child height range | 1650 mm | |
| Suitable user age range | 14 years | |
| Foam padding density | 45 kg/m³ | |
| Foam rebound rate | 60% | |
| Lift mechanism cycle durability | 100000 cycles | |
| Upholstery abrasion resistance | 30000 cycles | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and backrest upholstery | Breathable knitted fabric | |
|---|---|---|
| Seat and backrest padding | High-density resilient polyurethane foam | |
| Five-star base and foot platform | Reinforced polypropylene plastic | |
| Central lift column | Powder-coated steel tube | |
| Internal support frame | 1.5mm thick steel tube | |
| Caster wheels | Polyurethane tread with PP housing | |
| Adjustment control knobs | Color-matched ABS plastic | |
| Fabric surface treatment | Stain-repellent easy-clean finish | |
| 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 | Gas-assisted stepless lift with 210mm travel, locks at desired height | |
|---|---|---|
| Seat depth adjustment | Forward/back slide with 80mm travel, matches growing child thigh length | |
| Caster locking | Gravity-activated sit-brake casters lock automatically under ≥20kg seated load | |
| Split back support | Dual independent wing pads conform to spinal curve, provide lateral posture support | |
| Base foot platform | Integrated anti-tip footrest ring provides stable foot support for smaller children | |
| 360-degree swivel | Full rotation around central column for easy desk access | |
| 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 study space | Pairs with height-adjustable children's desks for daily homework and reading use | |
|---|---|---|
| Classroom and training environments | Suitable for primary school and after-school program seating | |
| Growing child use case | Adjusts to fit children 14 years old, supporting 165 cm height range | |
| Posture support use | Dual split backrest promotes healthy seated posture to reduce spinal strain | |
| High-activity household use | Sit-brake casters prevent unwanted movement when child is seated | |
| 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 17191:2021 | Applicable safety standard for children's seating products for domestic use | |
|---|---|---|
| EN 12520:2015 | Applicable strength, durability and safety standard for domestic seating |
Standards applicable to China-market projects
| GB 28007-2011 | Applicable safety standard for children's furniture used in home and school environments | |
|---|---|---|
| GB/T 3324-2017 | Applicable general technical requirement standard for wooden and metal furniture |
This product must meet the following technical requirements: 1. GB 28007-2011: Applicable safety standard for children's furniture used in home and school environments; 2. GB/T 3324-2017: Applicable general technical requirement standard for wooden and metal furniture; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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