Material Description 
 The seat, back Cotton: high-density cold solid foam shaped polyurethane sponge. 
 The seat and back shell: using high-quality PP (polypropylene) multi-element composite materials mold pressure injection molding. 
 Material: high-quality linen cloth, flame retardant, stain resistance, anti-static, fade. 
 Handrail frame and Station foot: high quality steel plate, steel stamping, welding forming, surface degreasing rust phosphating treatment, epoxy - polyester powder coating electrostatic spraying, high-temperature plasticizing processing, smooth appearance, not health rust, corrosion. Fusion bonded epoxy powder coating meet GB/T18593--2001 national standards. Screws with concealed technology, shape and smooth in appearance, not fouling 
 The armrest cover: solid wood material production molding, wood dry buffered by dehydration, outside shoe green paint, the implementation of the GB18581-2001 standard. 
 WordPad: The unique positioning of the shaft device, and to install the muffler gasket, support the connection structure are aluminum alloy pressure injection molding. 
 Board MDF coated with melamine surface colors. 
 Reply institutions: the gravity replies institutions. The reset accurate noise. 
 Specifications 
 Seat / Back foam: High density PU foam. 
 Seat and back cover: Injection molded with multiple composite materials (PP). 
 Fabric: Polyester. 
 Armrest and leg: Made from top quality steel after precise pressing and welding, and gone through procedures of polishing, anti-rusting, phosphing, spraying and powder coating. 
 Armrest cover: Solid wood or molded PU. 
 Writing tablet: Writes the board is the high density board, outside covers the melamine surface, High strength casts makes turns over the bearing. 
 Lifting mechanism: By gravity.