| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 544 x 770 x 720 mm | |
|---|---|---|
| Maximum seat height | 460 mm | |
| Minimum seat height | 325 mm | |
| Seat depth | 420 mm | |
| Backrest height adjustment travel | 160 mm | |
| Footrest platform length | 770 mm | |
| Armrest height above seat | 180 mm | |
| Backrest width per lobe | 220 mm | |
| Applicable child height | 1700 mm | |
| Minimum total chair height | 540 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 | |
|---|---|---|
| Static weight capacity | 150 kg | |
| Seat foam density | 45 kg/m³ | |
| Foam rebound resilience | 60% | |
| Fabric abrasion resistance | 30000 Martindale cycles | |
| Anti-tilt stability angle | 10° | |
| Recommended user age | 14 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ | |
| Upholstery Thickness / Abrasion Reference | 1.4 mm / 50000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| Internal support frame | 1.5mm thick powder-coated carbon steel | |
|---|---|---|
| Structural plastic components | High-impact food-grade PP plastic with rounded safety edges | |
| Seat cushion core | 45kg/m³ high-density molded PU foam | |
| Backrest cushion core | 35kg/m³ medium-density PU foam | |
| Upholstery fabric | 280g/m² breathable three-proof knitted polyester | |
| Fixed armrest pads | Padded soft-touch PU surface over PP base | |
| Integrated footrest platform | Textured non-slip PP plastic surface | |
| Caster housings | Translucent pink PP plastic with soft PU rolling tires | |
| Gas lift cylinder | 50mm diameter Class 3 steel gas lift | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame | |
| Tilt Mechanism Plate Thickness | 2.5 mm cold-rolled steel |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | 135mm total vertical travel via gas lift, multi-position lock | |
|---|---|---|
| Backrest adjustment | 25° adaptive tilt and 160mm height adjustment for spine alignment | |
| Caster locking | Gravity-activated auto-lock that engages under 15kg+ user weight | |
| Footrest function | Integrated wide non-slip platform for shorter children to rest feet | |
| Lumbar support | Dual split backrest lobes that independently conform to spine curve | |
| Armrest design | Fixed height padded armrests to support seated elbow posture | |
| Seam construction | 8 stitches per inch reinforced stitching for upholstery durability | |
| 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 | Suitable for children's bedroom or dedicated home study area | |
|---|---|---|
| Height-adjustable desk pairing | Designed for use with matching height-adjustable children's study desks | |
| Tutoring and learning centers | Appropriate for after-school tutoring centers and classroom use | |
| Target user group | Designed for children 14 years old, 170 cm tall | |
| Posture correction use | Ideal for children requiring upright seated posture support | |
| 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
| Children's furniture safety | EN 1729:2015 | |
|---|---|---|
| Upholstery fabric safety | EN 14465:2003 |
US and Canada office-furniture standards
| Office seating safety | ANSI/BIFMA X2017 |
|---|
Standards applicable to China-market projects
| Children's furniture safety | GB 28007 | |
|---|---|---|
| Formaldehyde emission | GB 18584 |
This product must meet the following technical requirements: 1. Children's furniture safety: GB 28007; 2. Formaldehyde emission: GB 18584; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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