Back:high density and soft P.U,highly active inflaming retarding element,coldly   firmly becomes spongy a body forming .the density of sponge is 56kg/m².

 Shell:the multi-elements compound material quality projects the forming,the anti-impact,provides for old aage,guards against discoloration.

 Coat:after anti-corrosive treatment,electrostatic powder spraying.

 Plus material:high class special cloth,inflaming retarding,fouling resistance,fastness,it can also choose leather.

  Seating washer retroflexion:rigging or damping spring automechanism.

  Written organization:High strength casts makes turns over the bearing,the board(the under tibet type)is the high density board,outside covers the melamine surface.

   Station foot: High quality 3mm cold rolling high-carbon steel oil pressre weldingsystem forming.