Nippon Chuzo KK engages in the manufacture and sale of cast steel and iron products which focuses on supplying large castings, special castings, steel castings for construction, steel materials, cast iron, new casting technologies and formed and fabricated materials, for casting machinery. Its products include carbon steel castings for parts of construction machine, alloy steel castings and forgings for parts of semiconductor and liquid crystal production equipment, alloy castings, gray iron castings, spheroidal graphite iron castings with heavy thickness (Super-Ductile) and horizontal continuous iron bars (Mighty Bar) for industrial machinery and mold parts of steelmaking and others. The company was founded by Soichiro Asano on September 1, 1920 and is headquartered in Kawasaki, Japan.