Dong Il Steel Mfg Co., Ltd. produces and sells steel wires in South Korea, Asia, and the Americas. Its products include low P.C. wires and strands for railroads, bridges, railroad sleepers, atomic furnaces, harbors, and airports; hard drawn steel and piano wires for precision spring products; galvanized steel wire and strands for ACSR and SS cables and messenger wires; cold drawn steel bar for automobiles, construction, industrial machinery, shipbuilding, and electronics; light metal for the automobile industry; and Mabon steel and Segyeong rod products. The company also engages in the rental business. Founded in 1959, it is headquartered in Anseong-si, South Korea.