Sumitomo Osaka Cement Co., Ltd. engages in the cement production business in Japan and internationally. The company's Cement segment offers assorted cement, ready-mix concrete, and cement-related solidification materials; supplies electrical power; and recycles raw materials and fuels. Its Mineral Resources segment supplies limestone and dolomite for cement, steelmaking, industrial raw materials, quicklimes, and fertilizers; aggregates for roads and various civil engineering works; calcium carbonate for power plant flue gas desulfurization, and high-fluidity concrete filling; and silica powder for various cement-related products materials, such as exterior wall materials and roof materials. This segment also exports its products in Asia. The company's Cement-Related Products segment manufactures and sells repairing and reinforcing materials for concrete structures. It is also involved in the development of materials for coping with heavy metal pollution; protection for concrete structures; and artificial marine reefs, as well as fish and seaweed beds, electrolytic protection methods, PC products and settings, and various hume concrete pipes. Its Optoelectronics segment manufactures and sells optical communications devices and components, optical measurement equipment, and optical transceivers. The company's Advanced Materials segment offers ceramic components for semiconductor manufacturing equipment; nanoparticle materials; antibacterial agents; cosmetics; and functional paints. Its Battery Materials segment provides rechargeable battery cathode materials. The company's Other segment leases real estate properties; provides engineering services; and develops software. Sumitomo Osaka Cement Co., Ltd. was incorporated in 1907 and is headquartered in Tokyo, Japan.