Mitsubishi Kakoki Kaisha, Ltd. engages in the engineering and construction of various industrial and chemical plants and environmental control facilities in Japan, 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 and related products, as well as various chemical engineering plants. The Machinery segment offers oil purifiers, separator and filtration machinery, sea water screening facilities, and mixers and related products. It also manufactures and sells of industrial machineries and equipment, including centrifugal separators, filtration systems, screens, mixers and cleaners. 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.