Mitsubishi Kakoki Kaisha, Ltd. engages in the engineering, procurement, and construction of various industrial and chemical plants and environmental control facilities in Japan, rest of Asia, and internationally. The company operates through Engineering and Machinery segments. The Engineering segment constructs city gas and petroleum plants, hydrogen generation plants, sewage treatment equipment, industrial effluent treatment equipment, water treatment equipment and related products, as well as various chemical engineering plants. The Machinery segment offers oil purifiers, separators and filtration machinery, sea water screening facilities, and mixers and related products. It also provides belt dehydrators, cleaners, concentrators, strainers, heat exchangers, towers, vessels, ballast water treatment systems, dryers, filters, and SOx scrubber systems. The company was formerly known as Kakoki Seisaku, Ltd. and changed its name to Mitsubishi Kakoki Kaisha, Ltd. in 1938. Mitsubishi Kakoki Kaisha, Ltd. was founded in 1935 and is headquartered in Kawasaki, Japan.