Toyo Gosei Co., Ltd. engages in the manufacture and sale of photosensitive materials, organic chemicals and solvents. It operates through the following segments: Photosensitive Materials and Chemicals. The Photosensitive Materials segment include the manufacture and sale of positive & negative-type photosensitive materials and photo acid generators. The Chemicals segment includes alcohols, aldehydes, acids, ketones, esters, ethers, hydrocarbons, and nitrogen compounds. It also provides materials for electronic display units, batteries & electrical double layer capacitors; warehousing, and transportation of goods. The company was founded on September 27, 1954 and is headquartered in Tokyo, Japan.