FD-LOK-And C-LOK was established in 1991. the head office is located in valves and fittings capital-Wenzhou. It has more than 200 staffs and covers an area of 10,000 square meters. We professionally manufacture instrument valves and fittings, including tube fittings, pipe fittings, weld fittings, needle valves, instrument ball valves, check valves, relief valves, valve manifolds and so on.