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.
Base:high density and softP.U,spring erection of steel work,coldly firmly becomes spongy a body forming.
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: all in fabric, 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.
|
