| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| 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
| Set total weight | 18 kg | |
|---|---|---|
| Desk top static load capacity | 100 kg | |
| Recommended user age group | 15 years | |
| Height adjustment positions count | 6 | |
| Anti-slip foot pad friction coefficient | 0.6 | |
| Surface scratch resistance cycles | 2000 | |
| 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 | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg |
Core acceptance fields · Panels / hardware / frame / upholstery
| Desk top substrate | 18mm thick particleboard | |
|---|---|---|
| Desk top edge banding | 2mm thick PVC edge trim | |
| Structural frame | 1.2mm thick powder-coated cold-rolled steel | |
| Under-desk storage box | 0.8mm thick powder-coated steel sheet | |
| Chair seat and backrest | 4mm thick molded polypropylene | |
| Adjustment locking hardware | Zinc-plated steel bolts and lock pins | |
| Base foot pads | 10mm thick rubber anti-slip pads | |
| Chair back support bars | 16mm diameter powder-coated steel tubing | |
| 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
| Desk height adjustment | Tool-operated pin lock with 6 fixed height positions | |
|---|---|---|
| Under-desk storage | Fixed open-front steel compartment for books and stationery | |
| Non-tip base design | T-shaped dual bar base with rubber end pads for floor contact | |
| Fixed seating orientation | Non-swivel, non-rolling frame aligned to desk | |
| Smooth easy-clean surface | Matte laminate desk and PP seat/back surfaces | |
| Edge impact protection | Rounded PVC edge banding on all desk and seat edges | |
| 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
| Primary and middle school classrooms | Matching adjustable height suits growing student cohorts across grade levels | |
|---|---|---|
| Tutoring centers and training institutions | Durable easy-clean construction supports high daily use rotation | |
| Home study spaces for children | Compact footprint and safety features suit home learning environments | |
| Examination halls and testing centers | Fixed non-rolling design maintains orderly row arrangements | |
| After-school care facilities | Scratch-resistant surfaces and sturdy frame withstand heavy daily use | |
| Temporary classroom setups | Lightweight stackable-compatible design allows fast reconfiguration | |
| 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 | Applicable European standard for functional dimensions of educational furniture | |
|---|---|---|
| EN 1729-2:2012 | Applicable European standard for safety requirements and test methods for school furniture |
Standards applicable to China-market projects
| GB/T 3976-2014 | Applicable standard for size and functional requirements of school desks and chairs | |
|---|---|---|
| GB 28007-2011 | Applicable safety standard for children's furniture general technical requirements | |
| GB/T 18883-2022 | Applicable reference for indoor air quality for classroom furniture emissions |
This product must meet the following technical requirements: 1. GB/T 3976-2014: Applicable standard for size and functional requirements of school desks and chairs; 2. GB 28007-2011: Applicable safety standard for children's furniture general technical requirements; 3. GB/T 18883-2022: Applicable reference for indoor air quality for classroom furniture emissions; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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