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The seat height is 450mm.
Backrest: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 400mm*325mm±10mm.
3. There is a 50mm±5mm concave curve arc design in the middle of the backrest, which can well support the back spine of the growing middle school children to avoid side bending. The backrest must have a minimum diameter of 5mm±1mm to a maximum of 16mm±1mm. Oval diverging vents, with no less than 220 vents.
Cushion: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 415mm×380mm±10mm.
3. The chair surface adopts ergonomic design to make students more comfortable. The chair surface should have a minimum diameter of 5mm±1mm to a maximum of 16mm±1mm oval diverging ventilation holes, with no less than 380 ventilation holes.
Writing board: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 370*280*12mm±10mm.
3. It can be rotated and folded for storage.
Tripod: 1. Material and shape: round tube + plastic chassis.
2. Size: Φ22*1.5mm round tube and integrated plastic chassis combined, beautiful and firm. Equipped with a 420*420*60mm iron basket for storage.
3. Surface painting: After the steel pipe frame is welded, the surface is treated by pickling, degreasing and phosphating to resist corrosion and rust. The surface is made of first-class granular powder, after high-temperature powder baking, it has strong adhesion and does not peel off. The coating shall be free of spray leakage and corrosion. The coating should be smooth and uniform, with consistent color, and will not peel off the surface paint after long-term use.
Function: The back of the chair is designed with a handle function part, which is convenient to carry, and it is also a hook function, which can hang school bags, clothes, etc.
Casters: 55mm in diameter.
Backrest: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 400mm*325mm±10mm.
3. There is a 50mm±5mm concave curve arc design in the middle of the backrest, which can well support the back spine of the growing middle school children to avoid side bending. The backrest must have a minimum diameter of 5mm±1mm to a maximum of 16mm±1mm. Oval diverging vents, with no less than 220 vents.
Cushion: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 415mm×380mm±10mm.
3. The chair surface adopts ergonomic design to make students more comfortable. The chair surface should have a minimum diameter of 5mm±1mm to a maximum of 16mm±1mm oval diverging ventilation holes, with no less than 380 ventilation holes.
Writing board: 1. Material: One-piece injection molding made of PP impact-resistant plastic.
2. Size: 370*280*12mm±10mm.
3. It can be rotated and folded for storage.
Tripod: 1. Material and shape: round tube + plastic chassis.
2. Size: Φ22*1.5mm round tube and integrated plastic chassis combined, beautiful and firm. Equipped with a 420*420*60mm iron basket for storage.
3. Surface painting: After the steel pipe frame is welded, the surface is treated by pickling, degreasing and phosphating to resist corrosion and rust. The surface is made of first-class granular powder, after high-temperature powder baking, it has strong adhesion and does not peel off. The coating shall be free of spray leakage and corrosion. The coating should be smooth and uniform, with consistent color, and will not peel off the surface paint after long-term use.
Function: The back of the chair is designed with a handle function part, which is convenient to carry, and it is also a hook function, which can hang school bags, clothes, etc.
Casters: 55mm in diameter.
