Nihon Dengi Co., Ltd. designs and constructs automatic control systems in Japan. It operates in two segments: Air Conditioning and Instrumentation Related Business, and Industrial System Related Business. The first segment provides air conditioning and instrumentation for non-residential buildings such as offices, factories, hospitals, research institutes, schools, and commercial facilities, and also handles building expansion or repair, automatic air conditioning control systems, renovation, and the sale of automatic control equipment and thermostats. The second segment provides instrumentation and automatic control for factories and transport lines, including food factories, as well as installation, maintenance, and production management of FA machines centered on industrial robots, and sells control equipment such as regulators, flow meters, and industrial valves. The company also designs and manufactures monitor panels and control panels and sells automatic control equipment. Incorporated in 1959, it is headquartered in Tokyo, Japan.