Headrest：3D,PA+GF,（adjustable）height、angle、front&back，with nylon mesh。
Backrest:PA+GF,（fixed）height,with PA (adjustable）lumbar support，with ABS（orange）decoration，with nylon mesh。
Armrest:2D,nylon-aluminum（height adjustable）armrest，with PU(360-degree rotation）armpad。
Seat:fire retardent molding foam, with PP inner and outer plastic cover,with sliding function,with 100% high eslastic polyester。
Mechanism:wire control mechanism，self-weight mechanism with 3 angels locking，lean back 21 degree。
Gaslift:America standard（class 4）gaslift。
Footbase:Aluminum alloy star base，d=700mm。
Castors:PA+PU castors，d=60mm。