| Submitted | Field | Original | Note / Status | |
|---|---|---|---|---|
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Automatic mm / inch conversion · Core engineering specifications
| Overall two-seat unit dimensions | 1180 x 792 x 1021 mm | |
|---|---|---|
| Per-seat center distance | 590 mm | |
| Seat height above finished floor | 450 mm | |
| Seat cushion depth (open position) | 440 mm | |
| Writing tablet size (deployed) | 300 x 250 x 12 mm | |
| Writing tablet height above floor | 750 mm | |
| Backrest total height above seat | 571 mm | |
| Minimum required row spacing | 950 mm | |
| Armrest top height above seat | 220 mm | |
| Unit depth with seat folded for aisle clearance | 500 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
| Per-seat net weight | 28 kg | |
|---|---|---|
| Recommended static load per seat | 150 kg | |
| Seat cushion foam density | 60 kg/m³ | |
| Backrest foam density | 45 kg/m³ | |
| Seat cushion foam thickness | 125 mm | |
| Backrest foam thickness | 135 mm | |
| Fabric abrasion resistance (Martindale) | 50000 cycles | |
| Expected service life with proper maintenance | 5 years | |
| Seat return impact noise level | 30 dB | |
| Seat Foam Density / Rebound Reference | 45 kg/m³ / 65% |
Core acceptance fields · Panels / hardware / frame / upholstery
| Seat and back upholstery | Wear-resistant blue woven polyester fabric | |
|---|---|---|
| Seat and back padding | Cold-molded high-resilience polyurethane foam | |
| Armrest top surfaces | Solid beech wood with clear lacquer finish | |
| Seat and back edge trim | Matching beech wood veneer trim | |
| Structural frame and stanchion legs | 2.0mm thick powder-coated carbon steel | |
| Floor mounting feet | Black painted cast iron with pre-drilled bolt holes | |
| Swing-out writing tablet surface | 12mm thick MDF with woodgrain laminate finish | |
| Seat/back inner support shell | 12mm thick molded hardwood plywood | |
| Seat return mechanism hardware | Zinc-plated steel torsion springs with rubber dampers | |
| Upholstery seam stitching | High-tenacity polyester thread with 8mm stitch pitch | |
| Seat Internal Support Board Thickness | 14 mm bent plywood or equivalent support board | |
| Backrest Internal Frame Thickness | 14 mm bent plywood/composite reinforced frame |
Adjustment / rotation / tilt / mobility / storage features
| Seat auto-return function | Damped torsion-spring fold-up, 3-second silent return to stowed position when unoccupied | |
|---|---|---|
| Writing tablet operation | Swing-out deployment from inner armrest, locks flat at 6.5° tilt, folds flush into arm when not in use | |
| Ganged row installation | Modular interlocking connection between adjacent seats for uniform row alignment | |
| Floor mounting system | Secured with M10 hex expansion bolts through pre-drilled base plates | |
| Noise damping design | Rubber bumpers at seat pivot and tablet contact points eliminate metallic impact noise | |
| Ergonomic back support | Contoured segmented backrest with built-in lumbar support for upright seated posture | |
| Separated seat cushion design | Individual padded seat per position with fabric divider between adjacent seats | |
| Optional customization features | Compatible with row number plates, embroidered logos, cup holders, and flame-retardant fabric upgrades | |
| Writing tablet tilt angle | 6.5° | |
| 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 |
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
| Lecture hall and university classroom use | Fixed row layout with writing tablets supports note-taking during extended academic sessions | |
|---|---|---|
| Corporate conference and training room use | Formal ganged seating with tablet surfaces accommodates presentations and training materials | |
| Small auditorium and theater pre-function space | Low-noise auto-return seats maintain clear aisles for audience entry and exit | |
| Government and institutional meeting hall use | Formal blue upholstery and wood trim meet public venue aesthetic and durability requirements | |
| Tiered seminar room installation | Floor-mounted design works on sloped tiered floors for unobstructed sight lines | |
| Public training center use | Wear-resistant fabric and durable frame withstand daily high-traffic repeated use | |
| 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 13761:2002 | Performance requirements for auditorium seating, applicable to structural stability and safety validation | |
|---|---|---|
| EN 1021-1:2014 | Upholstered furniture flammability test (cigarette ignition), recommended for public venue safety | |
| EN 12520:2015 | Furniture strength, durability and safety requirements for non-domestic seating |
US and Canada office-furniture standards
| ANSI/BIFMA X5.1-2017 | General purpose office chairs standard, applicable for static load and backrest durability reference |
|---|
Standards applicable to China-market projects
| GB/T 3324-2017 | General technical requirements for wooden furniture, applicable to wood trim and tablet components | |
|---|---|---|
| GB/T 3325-2017 | General technical requirements for metal furniture, applicable to steel frame and stanchion components | |
| GB 20286-2006 | Flame retardant requirements for public venue upholstered furniture, recommended for high-occupancy spaces | |
| GB/T 10357.3-2013 | Furniture mechanical performance test for seating, applicable for static load and durability validation |
This product must meet the following technical requirements: 1. GB/T 3324-2017: General technical requirements for wooden furniture, applicable to wood trim and tablet components; 2. GB/T 3325-2017: General technical requirements for metal furniture, applicable to steel frame and stanchion components; 3. GB 20286-2006: Flame retardant requirements for public venue upholstered furniture, recommended for high-occupancy spaces; 4. GB/T 10357.3-2013: Furniture mechanical performance test for seating, applicable for static load and durability validation; Final delivery parameters, test reports, and acceptance criteria are subject to the purchase contract.
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