Techno Ryowa Ltd. engages in the design, construction, and maintenance of environmental control systems primarily in Japan. The company offers industrial equipment, including clean systems, temperature/humidity control systems, energy/resource conservation equipment, spot air conditioning systems, industrial waste water/air treatment facilities, refrigeration/low-temperature equipment, production process operations, clean effluent processing plants, and nuclear power-related equipment. It also provides general building equipment comprising general air conditioning equipment, plumbing systems, disaster prevention/fire extinguishing systems, waste water treatment systems, district cooling/heating products, and co-generation systems. In addition, the company is involved in the provision of equipment maintenance services, such as equipment diagnosis and overhaul maintenance; design/construction of building ancillary equipment; and manufacture/sales of related machinery. Techno Ryowa Ltd. was incorporated in 1949 and is headquartered in Tokyo, Japan.