Muromachi Chemicals Inc. (4885.T) manufactures, distributes, and sells pharmaceuticals, health foods, chemicals, and functional materials primarily in Japan. The company operates through four main segments offering active pharmaceutical ingredients including calcium polystyrene sulfonate, potassium warfarin, and histamine dihydrochloride; intermediate synthesis products and commissioned synthesis services for radioactive and stable isotope-tagged compounds; ion-exchange resins, separation membranes, water-treatment equipment, and chemicals; health foods such as traditional tablets, jellies, and non-alcoholic beverages; and functional materials like adhesives, antistatic products, and custom-made pastes for electronics and other industries. Founded in January 1917 and formally established in July 1947, Muromachi Chemicals is headquartered in Omuta, Fukuoka, with additional facilities including a Tokyo branch, Osaka office, Tsukuba Plant, and Pharmaceutical R&D Center in Chiba. The company targets pharmaceutical manufacturers, healthcare providers, industrial clients in water treatment and electronics, and consumers, with import/export activities involving partners in China, India, and Europe. In recent developments, Muromachi Chemicals strengthened its development and sales systems for new areas including per- and polyfluoroalkyl substances (PFAS) treatment, contributing to revenue growth in the fiscal year ending May 2025; announced a "10 billion declaration" targeting 10 billion yen in revenue by May 2031 from a base of 6.4 billion yen; and expanded focus on pharmaceuticals amid trends of Japanese firms repatriating API production while deepening ties with overseas suppliers in high-risk regions.