Dong Il Steel Mfg Co.,Ltd engages in the production and sale of steel wires in South Korea, Asia, and the Americas. The company provides Low P.C. wires and strands for the construction of railroads, bridges, railroad sleepers, atomic furnaces, harbors, and airports; hard drawn steel and piano wires used for making precision spring products that require heavy load and repetition; and galvanized steel wire and strands used for ACSR and SS cables, and messenger wires. It also offers cold drawn steel bar used in industries, such as automobiles, construction, industrial machinery, shipbuilding, and electronics; light metal for automobile industry; and Mabon steel and Segyeong rod products, as well as engages in the rental business. The company was founded in 1959 and is headquartered in Anseong-si, South Korea.