By smelting ore and raw materials such as E-Scrap, Mitsubishi Materials produces high-quality metals such as copper cathode, gold and silver, PGMs (platinum, palladium, rhodium, etc.), tin, and lead, as well as by-products such as sulfuric acid, based on its advanced technological capabilities through the proprietary development of the Mitsubishi Process, a highly efficient and pollution-free smelting process. The business also provides gold, platinum, and silver accumulation services for individuals under the name "My Gold Partner" helping customers build assets.

The Resources Circulation business efficiently recovers and recycles valuable metals from discarded home appliances and automobile products. In response to growing concerns regarding environmental conservation and economic security, the business is also promoting initiatives globally to establish secondary smelting and "resource circulation loops."

Using copper cathode produced by copper smelting as the base material, the Copper & Copper Alloy Products business processes the copper cathode into oxygen-free copper, high-performance copper alloys, and other copper products for use in automobiles, semiconductors, and electronic equipment. The business handles everything from the manufacture of basic materials to advanced processing with advanced technologies, while implementing thorough quality control. The business contributes to the development of next-generation industries by providing a stable supply of products that meet the needs of an ever-evolving society, including advances in AI and the electrification of vehicles.

The Tungsten business provides high-hardness and high-heat-resistance materials, mainly tungsten powder and carbide, and supports a wide range of industrial fields, including precision machining and wear-resistant applications. By leveraging its unique material development capabilities and quality control technologies, the business contributes to enhancing the performance of cutting tools and industrial machine components, supporting higher productivity and precision at production sites.
In addition, the business has built a global business foundation that covers everything from raw material procurement to product supply, contributing to the advancement of manufacturing by ensuring a stable supply of highly reliable materials.

The Metalworking Solutions business develops and manufactures cemented carbide tools, which are essential for metal processing in industries such as automobiles and aircraft, and supplies them to manufacturing sites around the world. In addition to high durability and machining accuracy, the business has established a system to collect and recycle used tools. As a solution that achieves both high efficiency machining and environmental consideration, the business supports customers' productivity improvements.

The Advanced Products business provides high value-added electronic materials and high-performance components based on proprietary materials technologies, with a focus on growth fields such as semiconductors, automotive applications (xEVs), healthcare, and electronic devices.
Its principal business domains include electronic chemicals, functional materials, copper and copper alloy products, and electronic components. The business offers integrated capabilities covering material design tailored to specific applications and customer requirements, as well as development, manufacturing, and sales. By combining materials technologies and processing technologies cultivated over many years, the business ensures a stable supply of products that require high levels of precision and reliability.

The Mineral Resources business is responsible for the stable procurement of copper concentrates through mining investment, and the return on investment supports the creation of sustainable value for the Company.
By strategically investing in major overseas mines, the business has built a competitive portfolio of superior assets and has established a stable, long-term procurement system for copper concentrates.
Furthermore, utilizing the experience gained over many years, the business provides operational support and business management for mines in which it has invested, and engages in evaluating participation in new mine development projects.

The Renewable Energy business combines a diverse mix of power sources-primarily geothermal, hydroelectric, and solar-to develop an energy infrastructure that supports both a stable supply of electricity and the realization of a decarbonized society. Geothermal power generation is a particular strength of the business, with development records among the leading in Japan at sites such as Onuma, Sumikawa, Wasabizawa, and Appi, supported by subsurface exploration expertise that enables stable power generation. Hydroelectric power generation continues to provide a stable, long-term supply, mainly in Akita Prefecture. In addition, the business is expanding solar power generation by utilizing company-owned land, while also conducting studies of company-owned forests in the Hokkaido and Tohoku regions as potential sites for wind power generation.