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We manufacture and sell plates and coils made using copper, copper alloys, and brass which is an alloy of copper and zinc, as well as various other rolled copper products. Our rolled copper products are used in various applications centered around automotive terminals and consumer device terminals. The rolled copper division is currently operated by Mitsui Sumitomo Metal Mining Brass & Copper Co., Ltd., as a result of a business merger with Sumitomo Metal Mining & Smelting Co., Ltd., in July 2010.

Nakabohtec Corrosion Protecting Co., Ltd operates a corrosion prevention business designed to solve corrosion issues customers face with port and harbor structures that surround Japan, salt-air damaged concrete structures, pipelines that support life infrastructures, plant facilities, gate facilities, etc.

Yoshinogawa Electric Wire & Cable Co., Ltd., handles wires and cables business for applications that support our daily lives, including industrial robots, medical equipment, communications, etc.

MESCO, Inc. is a dedicated engineering company that provides comprehensive services for various industrial plants. Specifically, we provide planning, project management, operational training, and maintenance services to nonferrous metal ore sorting and refinery plants.