Tokuyama Corporation is a Japan-based company mainly engaged in chemical products, cement, advanced electronic materials, life science, and environmental business. It operates through five business segments. Chemicals segment provides caustic soda, soda ash, calcium chloride, sodium bicarbonate, sodium silicate, hydrogen, vinyl chloride monomer and others. Cement Segment engages in the manufacture and sale of cement, ready-mixed concrete and cement-based solidifying agents, and resource recycling. Advanced Electronic Materials segment provides polycrystalline silicon, fumed silica, silicon tetrachloride, aluminum nitride and others. Life Science segment provides medical diagnostic systems, in vitro diagnostic reagents and materials, dental equipment and others. Environmental Business segment provides ion-exchange membranes and recycles waste plasterboard. It also engages in the overseas sale of its products, as well as transportation and real estate management businesses.