Toagosei Co., Ltd. 5 Consolidated Subsidiaries Tsurumi Soda Co., Ltd. Manufacture & sale of caustic soda and chloride including high purity chloralkali products Toagosei Korea Co., Ltd. Sale of high purity chloralkali products Toa Techno-Gas Co., Ltd. Manufacture & sale of industrial gases Main Products and Application n Caustic soda Chemical fibers, pulp, dye, and pharmaceuticals n Oxygen Combustion enhancing gas for welding and cutting, combustion enhancing gas for steel making process, oxygen inhalation (and high pressure oxygen treatment) for medical use, oxygen aeration for wastewater treatment, oxygen-based pulp bleaching, and fermentation in biotechnology n Sulfuric acid Fertilizers, synthetic fibers, and inorganic chemicals n Hydrochloric acid Seasoning, dye, and pharmaceuticals Caustic soda is used in papermaking Salt is used in making caustic soda and chlorine Caustic soda is used in producing soap Welding process employing shield gas made by Toa Techno-Gas Co., Ltd. Pure inorganic chemicals are used in manufacturing silicon wafer Tsurumi Soda Co., Ltd. plant