Toyo Gosei Co., Ltd. manufactures and sells photosensitive materials, polymer products, and fine chemicals primarily for semiconductors, displays, and electronic components; offers high-purity solvents, flavor and fragrance materials, and logistics services including chemical storage, transportation, and tank terminals. The company operates in two main segments: Photosensitive Materials, which provides materials for photoresists such as ArF and EUV for cutting-edge semiconductors and displays, and Chemicals, encompassing high-purity solvents for semiconductors, aroma chemicals, and logistics bases. Founded in 1954 and headquartered in Tokyo, Japan, Toyo Gosei maintains production facilities in Chiba, Ichikawa, Awaji, and other locations across Japan, with representative offices in Shanghai, China, and past subsidiaries in the United States and Europe, targeting global niche markets in semiconductors and high-tech materials. Recent expansions include the completion of the Photosensitive Materials R&D/QC Center in May 2024 and capacity expansion of the No. 4 Photosensitive Materials Plant in September 2024, increasing ArF and EUV production capacity 1.8 times versus FY2021 levels; the Awaji Plant's No. 2 indoor filling station completed in March 2024 tripled high-purity solvent shipment capacity. In November 2024, the company received approval for METI Economic Security funding to expand photosensitive materials and high-purity solvent production 1.4 times by 2029, with investments planned at Chiba and Ichikawa plants; FY2024 sales reached a record ¥38.7 billion, up 21% year-over-year, driven by AI-related semiconductor demand.