1203C

Product size requirements:

Back shell dimensions and reference pictures:

The back shell is made of brand new PP material, with a net weight ≥1.5KG. A small sample of the back shell is required.

Seat shell dimensions and reference pictures:

The seat shell is made of new PP material, with a net weight ≥1.6KG. A small sample of the seat shell is required.

Hardware foot size requirements:

The writing board adopts an aluminum alloy flip mechanism, and the armrest cover is PP one-piece injection molding. A set of foot samples must be provided.

Technical requirements:

1. The seat 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 shape of the seat back shell adopts the concept of "abundance every year" (fish tail shape) in traditional Chinese culture as the morphological aesthetic design. The seat height and depth are reasonable, the sitting feeling is comfortable, the seat cushion can automatically return to its original shape, and the seat appearance is simple and beautiful.

2. The basic center distance of the seat is 540±5mm, the side depth of the seat when opened is 650±5mm, the side depth of the writing board when opened is 780±5mm, the basic chair height is 870±5mm, and the minimum row spacing is 800mm.

3. Writing board: The bracket is made of high-quality hot-rolled plate welded by carbon dioxide, the surface is treated with rust-proof electrostatic spraying, the panel is made of high-density medium-density fiberboard, externally pressed triamine board, and PVC edge sealing on all sides. The size specifications are: length 250±2mm, width 264±2 mm, thickness 15mm. The aluminum head of the writing board is made of high-quality aluminum alloy through integrated die casting, and the return mechanism is gravity 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 foams are all polyurethane cold-foamed high-resilience sponges. The seat sponge dimensions are: length 445±10mm, width 425±5mm, height 80±10mm, seat cushion density 50-55Kg/m³, back sponge dimensions: length 560±5mm, width 510±5mm, height 70±5mm, back cushion density 45-50Kg/m³, high strength, good resilience, and unique formula make the foam antibacterial and can effectively kill pathogens such as Escherichia coli.

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 278±5 mm, width 50±5 mm, and height 41±5 mm.

8. The automatic return system of the seat cushion accurately returns to its original position to ensure that it is parallel to the armrest, ensuring the beauty of the product. A double torsion spring return structure is used inside the seat, and rubber pads are added to the collision area where the seat returns to prevent collision and reduce noise, so that the seat opens without noise and there is no impact when returning.

9. The inner plate of the seat and back is made of 15±2mm thick high-quality plywood, which is formed by mold bending. The appearance is arc-shaped, beautiful and elegant, with beautiful curves. The outer shell of the seat and back is made of impact-resistant new PP material, which is molded by integral injection molding. The outer shell size of the seat is: length 494±5mm, width 430±5 mm, height 124±5mm, weight ≥1.6KG, and the outer shell size of the back is: length 729±5 mm, width 523±5mm, height 139.8±5mm, weight ≥1.5KG, to ensure the firmness of the seat and long-term use without trouble and abnormal noise.

10. The seat legs are made of T1.5mm high-quality hot-rolled plate welded by carbon dioxide, and the surface is treated with rust-proof electrostatic spray matte black. The leg dimensions are: length 595±2mm, width 333±2mm, height 50±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.

12. Provide one set of single-seat whole chair samples as required, one small sample of the seat shell, and one set of small samples of the footrests. No points will be awarded if the samples are not provided as required or the samples provided do not meet the requirements.