Daido Signal Co., Ltd. engages in the manufacture, sale, maintenance, and repair of railway signal safety devices, electrical equipment, and other mechanical devices. It operates through the following business segments: Railway Signal-Related, Industrial Machinery-Related, and Real Estate-Related. The Railway Signal-Related segment provides railway signal equipment. The Industrial Machinery-Related offers information and communication equipment. The Real Estate-Related segment handles the leasing of real estate properties. The company was founded in November 1929 and is headquartered in Tokyo, Japan.