| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall unfolded dimensions | 620 x 625 x 870 mm | |
|---|---|---|
| Folded storage height | 700 mm | |
| Seat height from floor | 480 mm | |
| Seat usable width | 460 mm | |
| Seat usable depth | 450 mm | |
| Backrest width | 400 mm | |
| Backrest height | 330 mm | |
| Seat to armrest height | 220 mm | |
| Armrest length | 250 mm | |
| Writing tablet usable surface | 360 x 175 mm | |
| Folded frame thickness | 100 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
| Unit net weight | 8.8 kg | |
|---|---|---|
| Recommended static user load | 150 kg | |
| Seat foam density | 60 kg/m³ | |
| Seat foam thickness | 40 mm | |
| Seat foam rebound rate | 45% | |
| Frame tubing wall thickness | 1.5 mm | |
| Stackable nesting quantity per row | 25 units | |
| Frame static load capacity | 300 kg | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% | |
| Back Foam Density Reference | 38 kg/m³ |
Core acceptance fields · Panels / hardware / frame / upholstery
| Support frame | 1.5mm cold-rolled steel tube, electrostatic powder-coated light gray finish | |
|---|---|---|
| Seat base | 15mm thick plywood support board under padding | |
| Seat upholstery | Wear-resistant polyester fabric over high-resilience foam pad | |
| Backrest | Glass-fiber reinforced polypropylene with vertical vented slots | |
| Writing tablet | Impact-resistant polypropylene with matte light gray finish | |
| Armrests | Fixed PP armrests mounted on steel frame supports | |
| Foot caps | Non-slip molded rubber caps at all four leg ends | |
| Upholstery fabric thickness | 0.8 mm | |
| Fabric abrasion resistance | 50000 Martindale cycles | |
| 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
| Frame folding mechanism | X-shaped hinged steel frame allows flat folding to 100mm thickness for nesting | |
|---|---|---|
| Writing tablet operation | Left-armrest mounted tablet folds flat to stored position flush with frame when not in use | |
| Backrest integrated slot | Horizontal top slot on backrest supports carrying or document storage | |
| Storage nesting capability | Folded chairs nest tightly together for high-density storage in training spaces | |
| Adjustability features | No swivel, height adjustment, or tilt mechanism for fixed stable seating | |
| Stability design | Four splayed legs with rubber feet provide anti-slip stability on hard floors | |
| Seam stitch pitch | 8 mm | |
| Warranty period | 5 years (frame), 2 years (upholstery/components) | |
| Recline Angle / Lock Reference | 125° with 3suggested lock positions | |
| Tilt Tension User-weight Range | Reference adjustment coverage 120 kg | |
| Height Adjustment Stroke | 100 mm continuous travel | |
| 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
| Corporate training rooms | Ideal for frequent reconfiguration and compact storage between sessions | |
|---|---|---|
| Conference/meeting spaces | Provides integrated writing surface for note-taking without separate tables | |
| Educational institutions | Durable construction supports high-traffic classroom and seminar use | |
| Temporary event seating | Quick deployment and compact storage for pop-up events and seminars | |
| Co-working flexible spaces | Easily reconfigurable for workshops, presentations, or hot-desking zones | |
| 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 16139:2013 | Non-domestic seating strength/durability/stability, applicable for commercial training use | |
|---|---|---|
| EN 1022:2018 | Seating stability test method, applicable for leg and frame stability validation |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | Office chair general purpose performance standard, applicable for load and durability |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for metal furniture, applicable to frame and structural performance | |
|---|---|---|
| GB/T 10357.3-2013 | Furniture mechanical performance test for chair seat and back strength, applicable for load validation | |
| GB 18584-2001 | Indoor decoration material formaldehyde emission limits, applicable for wood and foam components |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for metal furniture, applicable to frame and structural performance; 2. GB/T 10357.3-2013: Furniture mechanical performance test for chair seat and back strength, applicable for load validation; 3. GB 18584-2001: Indoor decoration material formaldehyde emission limits, applicable for wood and foam components; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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