NIHON DENGI CO., LTD. is primarily engaged in the design and construction of automatic control systems such as air conditioning system and others. The Air Conditioning Instrumentation segment is engaged in the design, construction, maintenance and inspection of automatic control systems for air-conditioning, including new work, additions and alterations, for nonresidential buildings such as office buildings, factories, hospitals, laboratories, schools, commercial facilities and others. It also sells automatic control machinery for air-conditioning such as automatic control panels, sensors and thermostats. The Industrial Instrumentation segment is engaged in the design, construction, maintenance and inspection of various automatic control systems other than air-conditioning instrumentation, such as systems for manufacturing processes of food and drug plants, transport lines of post offices and newspaper companies. It sells controllers, flow meters, industrial valves and others.