Sumitomo Metal Mining Co Ltd is a Japan-based company mainly engaged in resource development, manufacturing and sales of non-ferrous metal products, and manufacturing and sales of battery materials and functional materials. The Company operates through three business segments. The Mineral Resources segment is engaged in the exploration, development, production and sales of non-ferrous metal resources and products in Japan and overseas. The Smelting & Refining segment smelts and sells copper, nickel, ferronickel, zinc and other metals, and smelts and sells gold, silver, platinum, palladium and other precious metals. The Materials segment manufactures, processes, and sells battery materials, powder materials, crystal materials, and tape materials, as well as lightweight foamed concrete, automotive exhaust gas treatment catalysts, chemical catalysts, and petroleum refining desulfurization catalysts. The Company also operates businesses related to real estate and engineering.