Tsukishima Holdings Co., Ltd. engages in the design and manufacture of industrial machines and systems. It operates through the following segments: Water Environment, Industrial, and Others. The Water Environment segment deals with water purification and sewage treatment plants, dehydrators, dryers, and incinerators. The Industrial segment manages the design and construction of chemical, steel, and food production plants, waste management systems, and biomass ethanol plants. The Others segment deals with printing, bookbinding, and real estate leasing businesses. The company was founded in August 1905 and is headquartered in Tokyo, Japan.