PT Semen Indonesia (Persero) Tbk engages in the production and distribution of cement. It operates through Cement Production and Non-Cement Production segments. The Cement Production segment manufactures and support cement production. The Non-Cement Production segment consist of limestone and clay mining, cement bag manufacturing, industrial real estate, readymix concrete, IT services, logistics, and trading. The company was founded on March 25, 1953 and is headquartered in Gresik, Indonesia.