Description: 

Sponge: Both the seat and back sponges use cold foaming PU shaped sponge with high density. 
Seat, back plastic shell: Shaped by high grade PP(polypropylene) multielement composite material in the manner of injection molding in the mould. 
Back inner plate: Shaped by high quality composite board in the manner of cold pressing in the mould. 
Return function: Using the gravity return device which returns noiselessly. 
Handrail surface: Shaped by high grade PP(polypropylene) multielement composite material in the manner of injection molding in the mould.  
Surface material: Both the seat and the back use high grade specialized cloth with the advantages of antiflaming, dirt resistant and fade-proof.  
Tablet: Using aluminum alloy support structure, high density MDF panel and external cold pressing treated fireproof panel, and edge binding is applied to the circumference thereof.  
Foot rest: Shaped by stampiing and soldering high quality steel plates, and surface of which are treated with anti-rusting electrostatic spraying treatment.  
Ground fixing: Using antirust elctrostatic sprayed allen key setscrew with cylindrical head to prevent rusting. 
Seat appearance: The designs is ergonomic and has high comfort level.