... induction hardening for heat treating to parts to quenching, welding Jewelley clock, annealing glass shelf . Ultrahigh frequency induction ... appliying for classes of machine parts to heat treating(quenching,anneal, temper,normalizing..., Through heating,braze welding,smelting, other field ... IGBT,MOSFET and any other new type induction heating machine. 2.Fast speed,low power consumption,small volume, ...