Manufacturing and sales of electrical and electronic equipment ○ DLC coating services ○ Plasma ion injection deposition equipment for DLC coating ○ Power supply and equipment for atmospheric pressure plasma generation ○ Power supply for underwater plasma generation ○ Various pulse power supplies ○ High voltage pulse modulator ○ High voltage and large current power supply application equipment ○ Assembly wiring for equipment used in substations (circuit breakers, transformers, etc.)