Takashi Konishi

Part of Toyo Tanso Co., Ltd., Ohwada Carbon Industry Co., Ltd. is a Japanese company that manufactures carbon and graphite products. The company is based in Toyonaka, Japan.

Totan Kako Co. Ltd. develops and produces electrical carbon brushes. Its product carbon brushes are manufactured for power tool, vacuum cleaner, washing machine, industrial motor, railway, micro motor and fuel pump. The company is headquartered in Mitoyo, Japan.