... Portable induction heating machine of series 1. Heat treating all classes of machine parts to quenching,anneal 2,With IGBT HF induction heating machine ... Ultrahigh frequency,Double frequency) it is appliying forclasses of machine parts to heat treating(quenching,anneal, temper,normalizing..., ... IGBT,MOSFET and any other new type induction heating machine. 2.Fast speed,low power consumption,small volume ...