October 1947 The Company is established in Marugame, Kagawa Prefecture, with a capital of ￥2 million, as a producer of carbon disulfide. October 1957 No. 1 Tokushima Plant (now Tokushima Plant's Yoshinari location) is built and begins operations in the production of sodium sulfate. May 1961 CMC production begins at No. 1 Tokushima Plant.We applied CMC to wall material later. June 1962 No. 2 Tokushima Plant (now Tokushima Plant's Kitajima location) is built. October 1962 The Company's shares are listed on the Second Section of the Tokyo Stock Exchange. October 1963 The Company's shares are listed on the Second Section of