USAGE; BE SUITABLE OF ROTORS OF TYPES OF MICRO-ELECTROMOTOR ,ELECTROMOTION TOOL ELECTROMOTOR AND ELECTROMOTORS OF CARS AND MOTORS TO SMEAR AUTOMATICALLY FEATURES; HIGH FREQUENCY INDUCING HEATING,POWDER DONT STAIN WITH WORKING SLEEVES ,CLEARING UP STATORS OUTER CIRCLE ,SWEARING LAYER COMBINE DEEPLY,QUICKLY HEATING