- Business
- Sumitomo Osaka Cement Co., Ltd. manufactures and sells cement and related construction materials primarily in Japan and internationally. The company operates through Cement, Mineral Products, Building Materials, Photoelectronics, New Materials, and Others segments; it offers cement, cement-based solidification materials, ready-mix concrete, and electric power supply in the Cement segment; limestone, aggregate, calcium carbonate, dolomite, and silica powder in the Mineral Products segment; repair and reinforcement materials for concrete structures, heavy metal pollution control materials, cathodic protection systems such as ELGARD SYSTEM, fish reefs, seaweed beds, admixtures, ground improvement works, precast concrete products, and Hume pipes in the Building Materials segment; optical communication components and measuring equipment in the Photoelectronics segment; ceramic products, nanoparticle materials, functional films, antibacterial agents, cosmetic materials, and functional paints in the New Materials segment; as well as real estate leasing, information processing services, software development, engineering, and electrical construction utilizing idle land in the Others segment. Founded in 1907 and headquartered in Tokyo, Japan, Sumitomo Osaka Cement serves domestic infrastructure projects and industrial customers while expanding overseas presence. In recent developments, the company acquired a 15% stake in Philcement Corp. of the Philippines in September 2025 through a share subscription agreement with Phinma Corporation, bolstering its Southeast Asian operations ahead of Philcement's new 2Mt/yr integrated cement plant commissioning in Davao del Norte in 2026; this transaction, expected to close by year-end 2025, maintains Phinma's majority 60% ownership while supporting Sumitomo Osaka Cement's international growth strategy.