Blowing Scraps High-speed air stream forms negative pressure vacuum in the crevice of handpiece iside the cavity,blowing away the impurities from inside the pipes and crevies. ?Wash By Rinse Liquid Rinse liquid runs with air-stream into crevices at negative pressure,watering away the dirt. ?Puffing Blow dry the remnants inside the cavity of the handset turbine. ?Lubricating Lubricant enters negative-pressured crevices and carries out all-aroung lubrication. ?Puffing Blow away surplus lubricant,spreading oil film evenly over exletree bearings and wind whssl axsi. ?Finishing Now the bearings,wind wheel and pipes have been rinsed and lubricated and can be sealed for sterilization