Production Decription: ?All controlled by the electric valve ?Plastic pipe ?DC motor ?air spring ?Air-lock balance arm system ?Four way high speed handpiece tubes,2sets ?Four way Low-speed handpiece tube,1set ?3 way Syringe(one for hot and one for cold),2pcs ?Water Suction and Saliva Ejector,1set each ?The device for prevent refluence and the Built-in Water purified System ? Turnable Cuspidor ?Automatic Heating water system ?Operation Light ?Low Voltage DC X-film viewer ?Display System of the H.P.’s air pressure ?Dentist Stool,1pcs ?With low mounted instrument tray.