Qishine Pipe Fastener Manufacturer, founded in 1998, in the production of pipe fittings, specializing in the production of high-strength graphite composite gaskets and non-asbestos gaskets, PTFE gaskets, bolts, nuts, tees, elbows, bends, reducers, flanges, valves, steel pipes, etc. Managed with a highly skillful team, having the 20-year-accumulated experience in pipe fittings manufact... https://www.qishine.com