Production Decription: ?All controlled by the electric valve ? ED system have 3 memory positions ?Plastic pipe ?DC motor ? air spring ?Assistant controlled system ?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 ?Inductive operation Light ? AC X-film viewer ?Dentist Stool,2pcs ? With low mounted instrument tray