1210C

Product size requirements:

Back shell appearance dimensions and reference pictures:

The back shell is made of brand new PP material, with a net weight ≥1.28KG. A small sample of the back shell is required.

Seat shell appearance dimensions and reference pictures:

The seat shell is made of new PP material, with a net weight ≥1.3KG. A small sample of the seat shell is required.

Foot size requirements:

The footrest is tilted upward 6.5° to improve the comfort of the seat. A small sample of the hardware footrest is required.

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 humpback whale gill pattern in natural bionics as the morphological aesthetic design. The seat height and seat 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 580±10mm, the side depth of the seat with the seat bag opened is 696±10mm, the side depth of the writing board with the seat bag opened is 835±10mm, the basic chair height is 980±10mm, and the minimum row distance is 900mm.

3. Writing board: Built-in writing board, the bracket adopts 16mm diameter solid round steel support structure, the panel adopts high-density medium-density fiberboard, externally pressed triamine board, and PVC edge sealing on all sides. The size of the writing board panel is 250±10mm in length, 240±10mm in width, and 15mm in thickness. The writing board must have a silencer function when it is opened and recycled, and there must be no rebound force or noise.

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 470±10mm, width 439±10mm, height 110±10mm, sponge density 40-55KG/M3, back sponge dimensions: length 717±10mm, width 466±10mm, height 112±10mm, sponge density 35-45KG/M3, high strength, good resilience, and unique formula, making the foam antibacterial and able to 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 imported oak solid wood, with curved shapes, no deformation or cracking, and the armrest dimensions are: length 414±10mm, width 80±10mm, and height 30±10mm.

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 mold injection. The outer shell size of the seat is: length 480±10mm, width 470±10mm, height 95±10mm, weight ≥1.3KG, and the outer shell size of the back is: length 770±10mm, width 450±10mm, height 65±10mm, weight ≥1.28KG, to ensure the firmness of the seat and long-term use without trouble and abnormal sound.

10. The seat legs are made of high-quality 1.8mm thick carbon cold-rolled steel, which is made by die stamping, welding, grinding, degreasing and rust removal, and then electrostatic spraying. They are durable, rust-proof and corrosion-resistant. The left and right sides are equipped with side panels and covered with linen flannel, which is beautiful and collision-proof. The leg dimensions are: length 407±10mm, width 352±10mm, height 80±10mm.

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. It is required to provide a set of single-seat complete chair samples, a small sample of back shell accessories with a net weight of ≥1.28KG, and a small sample of seat shell accessories with a net weight of ≥1.3KG. If the samples are not provided as required or the samples provided do not meet the requirements, no points will be awarded.