Mitsui Mining & Smelting Co., Ltd. is a Tokyo-based nonferrous metals producer and a member of the Mitsui Group. The company specializes in the smelting, refining and marketing of base metals, including copper, zinc and lead, as well as precious metals such as gold and silver. With a history spanning back to its early 20th-century origins, Mitsui Mining & Smelting has built a reputation for technical expertise in metallurgical processes and materials science.
The company’s core business segments encompass traditional metals operations and advanced functional materials. In addition to smelting and refining, Mitsui Mining & Smelting manufactures automotive catalysts designed to reduce vehicle emissions, plating chemicals for electronics and industrial applications, and cathode active materials for lithium-ion batteries. Their research and development efforts target innovations in environmental technologies, energy storage, and high-performance electronic materials.
Mitsui Mining & Smelting maintains an international presence, operating production plants in Japan and holding sales and service networks across Asia, Europe and the Americas. The firm is also engaged in resource development through strategic stakes in overseas mining projects and offers comprehensive metal recycling services, including recovery of lead-acid batteries and electronic waste. Headquartered in Tokyo, Mitsui Mining & Smelting leverages its integrated upstream and downstream capabilities to serve customers in automotive, electronics, energy and other industrial sectors worldwide.
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