Topy Industries, Limited operates in the steel, automotive, industrial machinery components, and other businesses in Japan. It provides section steel products such as H-section steel, channel steel, angle steel, flat steel, bulb plate, and deformed section steel, as well as deformed bar steel and compact coil TACoil. The company also offers steel, aluminum, and construction machinery wheels for passenger cars, trucks, buses, and construction machinery, along with undercarriage components including tracks, rollers, cutting edges, shoes, links, pins, and bushes. Additionally, it provides crawler robots and synthetic mica products. Founded in 1921, it is headquartered in Tokyo, Japan.