Tech data
1. Bottom & back sponge: high density cold foaming PU styled, not less than 55kg/m3. No deformation in long time usage.
2. Bottom & back shell: high quality PP composite injection molded, anti impact, anti aging.
3. Fabric: high quality hemp velvet, wear resistance, anti fading, can have flame retardant, anti water, anti electrostatic dealt
4. Stand: high quality 2.0mm cold rolling steel panel and tube, through mould punching and welding formation, through grinding, polishing, rust removing, phosphating, electrostatic powder painted, and high temp hot oven.
5. Bottom bag rebound function: spring type or gravity type. Springs are high quality 65Mn, through hot dealt and anti-rust electroplating dealt, tired free, fault free in 100000 times usage.
6. Screws: stainless steel hexagon socket cap screws and expanding nut
7. Collapse structure: spring type or fixed type