Back/Base: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.

 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 pressure weldingsystem forming.

  Railing:import beech,oaken railing,high elasticity dermatoglyph P.U railing.