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