1219（1）

Product size requirements:

Technical requirements:

1. The chair is designed and manufactured according to the principles of ergonomics and morphological aesthetics. The curvature of the back cushion and seat cushion fully conforms to the curve of the human body. The seat height and seat depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original position, and the appearance of the chair is simple and beautiful.

2. The basic center distance of the seat is 525±5mm, the side depth of the seat with the seat bag opened is 680±5mm, the side depth of the writing board with the seat bag opened is 820±5mm, the basic chair height without headrest is 920±5mm, and with headrest is 1065~1125±5mm, the minimum row distance: 850mm.

3. Writing board: The bracket and flip mechanism adopt aluminum alloy polishing, spraying, electrophoresis and other processes; the writing board is made of ABS material and is one-piece injection molded, with dimensions: length 300±2mm, width 261±2 mm, thickness 15mm. The aluminum head of the writing board is made of high-quality aluminum alloy through one-piece die-casting, and the return mechanism is a damping flip return.

4. The fabric is made of high-grade knitted fabric and has been treated with anti-static and anti-moth treatment. It feels comfortable and will not wrinkle, break, pilling or fade after long-term use.

5. The seat foam is a polyurethane cold foam high-resilience shaping sponge with high strength and good resilience. The unique formula makes the foam antibacterial and can effectively kill bacteria such as E. coli. Seat sponge size: length 460±10mm, width 460±10mm, height 40±10mm, sponge density 40~55KG/M³, back sponge size: length 710±10mm, width 500±10mm, height 40±10mm, sponge density 45-50KG/M³.

6. All steel materials are made of the highest quality steel, and the welded parts are welded by robots, with high welding quality. The handrail bracket is formed by cold-rolled plate or profile stamping, and the surface is degreased, cleaned, rust-removed, cleaned, phosphated, cleaned, passivated, electrostatically sprayed with powder, cured, cooled, and then electrostatically sprayed with 30 microns of epoxy resin to ensure that the paint film will not rust after the 72-hour salt bath corrosion resistance test.

7. The seat armrests are made of high-quality PP (polypropylene) multi-element composite material through one-piece injection molding. The dimensions are: length 310±5 mm, width 54±5 mm, and thickness 35±0.3 mm.

8. The seat adopts a damping return mechanism, with two-level buffering that is fast at first and then slow, so that the seat can return to its position within 3 seconds and has an escape silencer function. Rubber pads are added to the collision part of the seat to prevent collision and reduce noise, so that the seat opens without noise and returns slowly without impact.

9. The seat and back shells are made of high-quality PP (polypropylene) + fiber composite material injection molding. The appearance is arc-shaped, beautiful and elegant, non-fading and anti-deformation, with curvaceous beauty. Back shell size: length 710±10mm, width 500±10mm, thickness 4.0mm. Seat shell size: length 450±10mm, width 450±10mm, thickness 4.0mm.

10. The seat legs are made of T1.8mm high-quality hot-rolled plates welded by carbon dioxide, and the surface is treated with rust-proof electrostatic matte spraying. The leg dimensions are: length 320±2mm, width 48±2mm, height 585±2mm.

11. The seat is fixed to the ground with hidden pressure-explosive screws, and the appearance is specially designed with a plastic dust cover to ensure that the chair legs are smooth and beautiful while preventing dust accumulation and facilitating cleaning.