Solid-state H.F. Welder, DC drive cabinet, solid-state induction heating equipment (non welding pipe), GCYP/GZP series solid-state super-audio/m.F. Induction heating device, GGP series solid-state H.F. Induction heating equipment, KGPS series thyristor M.F. Induction heating device, GP series vacuum H.F. Induction heating device, KGS series large power dc power supply, various specifications of standard and non-standard quenching machine tool: CNC numerical control, PLC program control, circulation soft water cooling system (water-water cooling system).