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1. Specifications: W670mm×D800mm×H1080mm (the above dimensions allow a deviation of ±5mm), seat height 430mm (dimension allows a deviation of ±5mm).
2. Leather uses environmentally friendly artificial leather, thickness 1.5mm; pH (4.0-9.0), formaldehyde content Class C ≤300mg/kg, tensile load longitudinal ≥120 N, transverse ≥120 N, elongation at break longitudinal ≥50%, transverse ≥50%, tear load longitudinal ≥30 N, transverse ≥30N, abrasion resistance surface without rupture, decomposable carcinogenic aromatic amine dye results qualified, meeting the standard requirements of QB/T 5067-2017.
3. Polyurethane molded sponge: apparent density ≥60kg/m³, 25% indentation hardness grade/196N±18N, 75% compression permanent deformation ≤4%, resilience ≥50%, tear strength (grade/93N) ≥1.8N/cm, tensile strength after dry heat aging ≥100KPa, formaldehyde emission ≤0.020mg/㎡.h, meeting the requirements of GB/T 10802-2006 standard.
4. Legs and armrests: made of solid rubberwood.
5. Seat board and backboard substrate: made of multilayer flame retardant board, combustion growth rate index FIGRA 0.4MJ： ≤190W/s, lateral flame spread: did not reach the long wing edge of the sample, total heat release THR within 600s 600s：≤5MJ， Flame tip height FS within 60s: ≤80mm, burning droplets: no burning droplets igniting filter paper phenomenon within 60s.
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