one thousand two hundred and twenty

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 530±5mm, the side depth of the seat when opened is 585±5mm, the side depth of the writing board when opened is 760±5mm, the basic chair height is 910±5mm, and the minimum row distance is 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 with high-quality special mesh, and is 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 made of polyurethane cold foam high-resilience sponge. The seat sponge size is: length 467±10mm, width 450±5mm, height 100±10mm, seat cushion density 40-55Kg/m³, high strength, good resilience, unique formula, so that the foam has antibacterial properties, can effectively kill bacteria such as E. coli. The back of the chair is not filled with sponge, and it uses high-quality special net with high-strength plastic structure. The special net can also be processed into 3M anti-fouling; Teflon anti-splash, dust-proof; anti-static, anti-bacterial, and anti-mildew according to needs.

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 3±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 outer shell of the seat and back is made of impact-resistant new nylon material through integral injection molding. The appearance is arc-shaped, beautiful and elegant, with beautiful curves. The outer shell size of the seat is: length 460±5mm, width 450±5mm, thickness 3±0.3mm; the outer frame size of the back is: length 540±5mm, width 500±5mm, thickness 4±0.3mm, weight ≥1.5KG, the inner frame of the back is made of high-strength PP material plus glass fiber through integral injection molding, length 495±5mm, width 454±5mm, thickness 3±0.3mm, to ensure the firmness of the seat and long-term use without trouble and abnormal noise.

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 265±2mm, width 48±2mm, and 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.