electric welding machines and parts thereof; spark erosion machines and part thereof; hardening machines and parts thereof; machines and parts thereof for the electrochemical treatment of metal; pumps, filters, filter presses, centrifuges and metal settling basins for the treatment of electromlytes; electric induction machines,namely, stirrers for the electromagnetic agitating of liquid metals; electric generators

electric transformers; pulse generators for use with spark erosion machines; electric converters and inverters; data processors; electric frequency converters for equipment that electrically heats metals; electrical instrumentation and control equipment for controlling and regulating induction heating machines, furnaces, resistance heaters, electrical induction stirrers, hardening machines, machines for electrochemical treatment of metals, electrical welding machines and spark erosion machines

Inductors for the heating of metallic surfaces, inductors for the heating through of metals; inductors for the welding of metals, inductors for the heating of metallic surfaces for bonding and coating; induction heating machines and parts thereof for industrial use; resistance heaters and parts thereof for industrial use; electric induction furnaces and parts thereof for the heating and melting of metals