Hy-Lok Corporation operates in the fluid and control system industry worldwide. It offers fittings, including tube, high pressure, RS, hose, clean, o-ring face seal, instrument thread and weld, and pipe fittings, as well as quick connectors, flanges, pre-insulated tubing, and Teflon flexible hose. The company also provides needle, manifold, ball and plug, high pressure, double block and bleed, cryogenic, check and relief, and bellow and diaphragm valves; CNG products; regulators; and filters. In addition, it offers package solutions, such as air piping modules, air manifolds, instrument cabinets, and sampling systems. It serves on/offshore, LNG, chemical and petrochemical, power plant, rolling stock, CNG, machinery, semiconductor, aerospace, defense, etc. industries. The company was formerly known as HyupDong Metal, Ltd. Co and changed its name to Hy-Lok Corporation in July 2000. Hy-Lok Corporation was founded in 1977 and is headquartered in Busan, South Korea.