1.Material of upholstery: Imported elastic mesh
2.Structure：PP+GF

3.Armrest: Folding armrest with mesh-paded
4.Seat: High density foam 
5.Inner Construction: Plywood of 12 mm thickness
6.Mechanism: Simple mechanism(lifting,swivel, tilt and lock at  90°)                          
7.Gas lift: Class 3 gas lift with SGS certificate
8.Base: Nylon 5-star base with PU castors