Hitachi Zosen Corp. engages in the design and construction of environmental systems, industrial plants, industrial machinery, process and infrastructure-related equipment, disaster prevention systems, and precision machinery. It operates through the following segments: Environmental Systems and Industrial Plants, Machinery, Infrastructure, and Other Businesses. The Environmental Systems and Industrial Plants segment includes environmental protection systems, desalination and potabilization plants, chemical plants, and water treatment systems. The Machinery segment produces marine diesel engines, boilers, nuclear equipment, plastic machinery, food filling, and packaging systems. The Infrastructure segment includes bridge construction, water gates, and shield tunneling machines. The Other Businesses includes transportation and warehousing businesses. The company was founded by Edward H. Hunter on April 1, 1881 and is headquartered in Osaka, Japan.