DK-Lok Corporation and its subsidiaries manufacture and sell fittings and valves in South Korea, the United States, Italy, the United Arab Emirates, the Middle East, Asia, and Oceania. Its products include tube, instrumentation, pipe and weld, bite type, O-ring face seal, JIC tube, ultra torr vacuum, push-on hose, hose adapter, hydraulic pipe, aerospace, and high pressure fittings and valves, as well as ball, plug, needle, bellow, bleed and purge, regulator and metering, diaphragm, manifold and gauge, check and relief, cryogenic, rising plug and toggle, and block and bleed valves, and filters. The company also offers swaging units, gap gauges, tube depth marking tools, VR and DCR fittings, UHP fittings, IGS, and check, globe, gate, and ball valves. These products serve the oil and gas, refining and petrochemicals, machinery and equipment, construction and engineering, procurement and construction, shipbuilding and maritime, semiconductor and display, compressed natural gas/natural gas vehicles, aerospace and aviation, hydrogen, and trams industries. Formerly known as DK Tech Corporation, it changed its name to DK-Lok Corporation in April 2014. Founded in 1992, the company is based in Gimhae-si, South Korea.