Rasa Industries Ltd. engages in chemicals, machinery, and electronic materials businesses. It operates through the following segments: Chemical Products, Machinery, Electronic Materials, and Others. The Chemical Products segment deals with the manufacture and sale of secondary phosphoric acid and phosphorous salts, flocculants for water treatment, high-purity agents for the electronics industry, deodorants, and antibacterial agents. The Machinery segment includes boring machines, crushers, waste processing machinery, and steel products. The Electronic Materials segment is involved in the production of inorganic materials. The Others segment includes catalyst regeneration for petroleum refining and real estate leasing businesses. The company was founded by Noritaka Tsuneto in February 1911 and is headquartered in Tokyo, Japan.