Hy-Lok Corporation operates in the fluid and control system industry worldwide. It offers fittings such as tube, high pressure, RS, hose, clean, o-ring face seal, instrument thread and weld, and pipe fittings, along with 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, as well as CNG products, regulators, and filters. In addition, it offers package solutions including air piping modules, air manifolds, instrument cabinets, and sampling systems, serving industries such as on/offshore, LNG, chemical and petrochemical, power plant, rolling stock, CNG, machinery, semiconductor, aerospace, and defense. 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.