| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions | 490 x 650 x 970 mm | |
|---|---|---|
| Seat cushion dimensions | 430 x 410 mm | |
| Maximum seat height | 490 mm | |
| Minimum seat height | 350 mm | |
| Maximum overall chair height | 970 mm | |
| Minimum overall chair height | 720 mm | |
| 5-point caster base diameter | 600 mm | |
| Seat cushion thickness | 60 mm | |
| Backrest panel height (split variant) | 380 mm | |
| Caster wheel diameter | 50 mm | |
| Armrest height above seat (pink variant) | 180 mm | |
| Split backrest panel width per piece | 140 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
| Maximum static load capacity | 150 kg | |
|---|---|---|
| Net weight | 9 kg | |
| Recommended user age range | 12 years | |
| Recommended user height range | 160 cm | |
| Compatible study desk height | 850 mm | |
| Fabric abrasion resistance | 30000 rub cycles | |
| Foam density (seat/back) | 45 kg/m³ | |
| Foam rebound rate | 55% | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Internal support frame | 1.2mm thick Q195 carbon steel pipe | |
|---|---|---|
| Seat and back padding | High-density polyurethane shaped foam | |
| Upholstery fabric | Breathable knitted polyester fabric | |
| Armrests (pink variant) | PP + ABS engineering plastic with smooth edge finish | |
| 5-point base chassis | Reinforced PP plastic with colored dot decorative accents | |
| Caster wheels | Nylon bracket with soft PVC rolling surface | |
| Height adjustment pole | Powder-coated steel tube with graduated height markings | |
| Backrest support bracket | Glass-fiber reinforced PP connector | |
| Adjustment handle (top of pole) | ABS plastic ergonomic grip | |
| 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 |
Adjustment / rotation / tilt / mobility / storage features
| Seat height adjustment | 140 mm vertical travel via lockable steel column, fixed height positions | |
|---|---|---|
| Mobility function | 360° swivel 5-point caster base for smooth movement on hard floors | |
| Back support options | Dual split lumbar back (pink/blue) or single contoured back (blue) | |
| Posture support feature | Contoured W-shaped seat pan to reduce leg pressure and promote upright sitting | |
| Armrest option | Fixed non-adjustable armrest fitted on selected pastel pink variants | |
| Color option availability | Pastel pink or pastel blue finish for seat, back and base accents | |
| Caster floor protection | Soft PVC wheel surface prevents scratches on wood or tile flooring | |
| 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 | Pairs with height-adjustable study desks for writing, homework and reading activities | |
|---|---|---|
| Early education classroom use | Suitable for preschool and primary school student seating in tutorial centers | |
| Family multi-use activity space | Used for art, craft and screen-based learning activities at home | |
| Target user group | Children 12 years old, height 160 cm for long-duration seated tasks | |
| Recommended configuration | Pair with 850 mm height adjustable study desk for ergonomic posture alignment | |
| Floor type suitability | Safe for use on hardwood, laminate and tile floors without surface scratching | |
| 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 1729-1:2015 | Furniture for educational institutions Part 1: Functional safety and strength requirements | |
|---|---|---|
| EN 12520:2015 | Domestic furniture seating strength, durability and safety requirements for child use | |
| EN 71-3:2019 | Toy safety Part 3: Migration of certain elements, applicable for painted plastic components |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Office chairs general purpose tests, applicable for caster and base static load validation | |
|---|---|---|
| ANSI/BIFMA X5.4-2020 | Lounge and public seating, applicable for vertical load and durability testing |
Standards applicable to China-market projects
| GB 28007-2011 | General safety technical requirements for children's furniture, applicable for structural safety checks | |
|---|---|---|
| GB/T 3324-2017 | General technical requirements for wooden/metal furniture, applicable for finish and stability testing | |
| GB 6675.1-2014 | Toy safety Part 1: Basic safety specification, applicable for small part and edge safety |
This product must meet the following technical requirements: 1. GB 28007-2011: General safety technical requirements for children's furniture, applicable for structural safety checks; 2. GB/T 3324-2017: General technical requirements for wooden/metal furniture, applicable for finish and stability testing; 3. GB 6675.1-2014: Toy safety Part 1: Basic safety specification, applicable for small part and edge safety; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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