Chair back: steel frame + 7cm cutting board + high resilience sponge.
Seat cushion: 12mm single layer plywood + high resilience sponge.
Armrest: aluminum alloy armrest + PP armrest surface.
Chassis: large handle butterfly chassis, in-situ locking.
Air Rod: Stroke 65mm three-stage air pressure rod.
Chair legs: 350 iron electroplated square tube legs.
Chair wheels: 50/25 nylon universal plug-in wheels.
