| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall dimensions when unfolded | 620 x 700 x 870 mm | |
|---|---|---|
| Seat height from floor | 480 mm | |
| Seat usable width | 460 mm | |
| Seat usable depth | 450 mm | |
| Backrest height above seat | 330 mm | |
| Backrest width | 400 mm | |
| Armrest height above seat | 220 mm | |
| Writing tablet usable dimensions | 250 x 360 mm | |
| Writing tablet thickness | 17.5 mm | |
| Folded profile depth | 200 mm | |
| Leg spread width at floor | 580 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 per chair | 8 kg | |
|---|---|---|
| Maximum recommended user load | 150 kg | |
| Stacking quantity for storage | 15 chairs | |
| Writing tablet static load capacity | 15 kg | |
| Frame static load rating | 300 kg | |
| Seat cushion foam density | 45 kg/m³ | |
| Seat cushion foam thickness | 40 mm | |
| Backrest foam thickness | 10 mm | |
| Warranty period for commercial use | 5 years | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Frame construction | 1.5 mm thick powder-coated cold-rolled steel tube | |
|---|---|---|
| Backrest | Vented slotted black polypropylene plastic | |
| Seat upholstery | 300D polyester fabric over high-density foam | |
| Seat internal support | 12 mm thick plywood base under foam padding | |
| Writing tablet | Solid black polypropylene plastic with steel pivot bracket | |
| Armrests | Integral glass-fiber reinforced polypropylene | |
| Foot caps | Non-slip injection-molded nylon end caps | |
| Tablet pivot hardware | Zinc-plated steel hinge with detent lock | |
| Surface finish on frame | Epoxy polyester powder coating, matte black | |
| 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
| Folding mechanism | X-pattern steel frame hinge that folds flat for storage | |
|---|---|---|
| Writing tablet operation | Side-mounted tablet rotates 90 degrees to stow flush when not in use | |
| Stacking capability | Folded chairs nest vertically for high-density storage | |
| Backrest ventilation | Vertical slotted openings provide 30% open area for airflow | |
| Optional caster compatibility | Pre-drilled leg ends accept 50 mm swivel casters for mobile configurations | |
| Seat tilt lock | Positive lock in open position to prevent unintended folding during use | |
| Optional under-seat storage | Frame accepts mesh book net attachment below seat | |
| Tablet load detent | Locking detent holds tablet in horizontal working position | |
| 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 | Compact stackable design supports quick room reconfiguration between sessions | |
|---|---|---|
| Conference and meeting spaces | Integrated writing tablet supports note-taking without separate tables | |
| Educational institution classrooms | Durable frame and easy cleaning suit daily student use | |
| Temporary event seating | Foldable lightweight design allows fast setup and teardown for events | |
| Co-working flexible spaces | Stackable storage minimizes footprint when not in active use | |
| Exam and assessment halls | Attached tablet provides individual writing surface for testing environments | |
| 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 1728:2012 | Domestic and commercial furniture seating test methods for strength and durability | |
|---|---|---|
| EN 1022:2018 | Seating furniture stability test standard for non-domestic use | |
| EN 12520:2015 | Strength, durability and safety requirements for commercial seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chairs standard for static and dynamic load testing | |
|---|---|---|
| ANSI/BIFMA X5.4-2020 | Lounge and public seating standard for multi-use institutional applications |
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for metal furniture, applicable to frame structural performance | |
|---|---|---|
| GB/T 35607-2017 | Green product assessment standard for furniture, applicable to low-emission material verification | |
| GB 28007-2011 | Safety requirements for children's and institutional furniture, applicable to stability testing |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for metal furniture, applicable to frame structural performance; 2. GB/T 35607-2017: Green product assessment standard for furniture, applicable to low-emission material verification; 3. GB 28007-2011: Safety requirements for children's and institutional furniture, applicable to stability testing; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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