NIHON DENGI CO., LTD. engages in the design and construction of automatic control systems such as building automation and factory automation, as well as the sale of automatic control equipment. It operates through the Air Conditioning Instrumentation and Industrial Instrumentation segments. The Air Conditioning Instrumentation segment deals with the design, maintenance during and after construction, and inspection of automatic air conditioning control systems for office buildings, factories, hospitals, laboratories, schools, non-residential buildings, and commercial facilities. It also sells equipment for automatic control of panels, sensors, and thermostat. The Industrial Instrumentation segment targets instrumentation fields other than air conditioning instrumentation mainly automatic control systems for food and drug production processes and postal office and newspaper conveyance lines. It also sells control instrumentations such as regulator, flow meter and industrial valve. The company was founded on September 26, 1959 and is headquartered in Tokyo, Japan.