... tubes;4.special security, no pressure, eliminating the high risk of electric shock;5.high reliability: modular, integrated, high reliability assurance; ... 2.Motor Parts:the shaft hardening for rotor, the degrease of silicon steel plate for rotor, epoxy powder coating for rotor ... tool, the soldering for air gauge, the temper of pontil, the hardening of surface for high tensile screw, epoxy powder coating ...