... expensive tubes;4.special security, no pressure, eliminating the high risk of electric shock;5.high reliability: modular, integrated, high ... Wheel quenching etc. 2.Motor Parts:the shaft hardening for rotor, the degrease of silicon steel plate for rotor, epoxy ... gauge, the temper of pontil, the hardening of surface for high tensile screw, epoxy powder coating for locking nut etc. low price of induction ...