PT Semen Indonesia Tbk is a state-owned holding company providing building material solutions. The company has 17 subsidiaries located in Indonesia and Vietnam. With a market reach to Asia, Australia and Oceania, the company's main business is in the cement sector and its derivative products such as concrete, mortar, precast, and aggregate. In running its main business process, the company has supporting business lines such as construction and manufacturing services, land and sea transportation services, industrial packaging provider, mining services, international trade service, and building material solution applications. In addition, through several subsidiaries and business units, the company also does business in property, industrial estate management, industrial waste management, informatics solutions, and health services. Wikipedia