| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| overall set footprint | 650 x 450 x 790 mm | |
|---|---|---|
| desktop size | 650 x 450 mm | |
| desktop thickness | 25 mm | |
| desk height adjustment range | 790 mm | |
| under-desk storage cubby dimensions | 500 x 300 x 160 mm | |
| seat size | 400 x 400 mm | |
| seat panel thickness | 25 mm | |
| seat height adjustment range | 460 mm | |
| chair backrest size | 400 x 250 mm | |
| desk knee clearance height | 630 mm | |
| foot crossbar length | 450 mm | |
| steel frame tube wall thickness | 1.8 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
| set net weight | 18 kg | |
|---|---|---|
| desktop static load capacity | 150 kg | |
| adjustment position count | 6 | |
| powder coating abrasion resistance | 2000 cycles | |
| warranty period | 5 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 | |
| Five-star Base Static Load Reference | Acceptance target ≥120 kg; chair reference load 150 kg | |
| Caster Rolling Durability Reference | Acceptance target 30000 cycles |
Core acceptance fields · Panels / hardware / frame / upholstery
| desktop panel | Yellow high-pressure laminate over E1-grade wood-composite core | |
|---|---|---|
| seat panel | Yellow high-pressure laminate over E1-grade wood-composite core | |
| chair back panel | Light wood-look laminate over wood-composite core | |
| support frame | White electrostatic powder-coated oval steel tubing | |
| height adjustment brackets | Punched 1.8mm thick steel with white powder coating | |
| floor foot caps | Blue injection-molded PP plastic non-slip glides | |
| frame welds | Seamless welded steel joints with anti-oxidation finish | |
| desktop edges | Rounded PVC edge banding | |
| adjustment fasteners | Zinc-plated hex socket self-tapping bolts | |
| 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
| height adjustment mechanism | Bolt-through perforated bracket system with 6 fixed height positions | |
|---|---|---|
| under-desk storage | Open front fixed cubby under desktop for books and supplies | |
| floor stability | Dual horizontal steel crossbars with PP glides prevent tipping and floor scratching | |
| seating support | Curved tubular steel back frame provides lumbar support for upright study posture | |
| surface functionality | Smooth laminate surface resists pencil marks and spills, easy to clean | |
| edge safety | Rounded banded edges eliminate sharp corners to prevent student injury | |
| assembly design | Knock-down construction for compact shipping and on-site assembly | |
| 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
| K-12 classroom installation | Fixed-position individual seating for primary and middle school student use | |
|---|---|---|
| Training room deployment | Durable, easy-to-clean seating for institutional training and exam venues | |
| Home study space | Height-adjustable option for children's dedicated homework and study areas | |
| Tutoring center use | Stackable? No, fixed-leg units suitable for permanent tutorial room layouts | |
| After-school program facilities | Scratch-resistant surfaces withstand heavy daily use by student groups | |
| 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 safety and strength of educational furniture | |
|---|---|---|
| EN 1729-2:2012 | Applicable European standard for safety requirements of school chairs and desks |
Standards applicable to China-market projects
| GB/T 3976-2014 | Applicable standard for functional sizes of student desks and chairs for schools | |
|---|---|---|
| GB 18584-2001 | Applicable standard for formaldehyde emission limits on wood-based furniture panels | |
| GB/T 3324-2017 | Applicable general technical requirement standard for wooden furniture |
This product must meet the following technical requirements: 1. GB/T 3976-2014: Applicable standard for functional sizes of student desks and chairs for schools; 2. GB 18584-2001: Applicable standard for formaldehyde emission limits on wood-based furniture panels; 3. GB/T 3324-2017: Applicable general technical requirement standard for wooden furniture; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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