DK-Lok Corp. engages in the manufacture and supply of instrumental fittings and valves. It operates through the following business areas: Offshore and Onshore, Automotive and Hydrogen Fuel Cell, Shipbuilding and Marine Engine, Chemical, Petrochemical and Refinery. The company was founded by Noh Eun-Sik in January 1986 and is headquartered in Gimhae-si, South Korea.