Sumitomo Osaka Cement Co., Ltd., established in 1907 and headquartered in Minato-ku, Tokyo, Japan, manufactures and sells cement, solidification materials, mineral products, and building materials. It operates cement plants across Japan and maintains international activities.
As of March 2026, the company had 1,364 non-consolidated employees. In January 2026, it acquired a 15% stake in Philcement to support expansion. In July 2026, it agreed to acquire a 70% equity stake in S.C. Cement Co., Ltd. from Sumitomo Corporation, with the transfer scheduled for completion on October 1, 2026, subject to approvals.
Official website: soc.co.jp
