NINGBO JIULONGCHUANGZHAN FASTENER founded in 1985. We mainly produce high strength fasteners, hex  head bolts, socket head screws, studs, nuts & washers, and are applicable for high speed train, maglev, subway , railway and bridge , cross-sea bridge, steel construction factory houses, chemical industry, metallurgy, wind power generation etc. The company has passed ISO9001:2000 Quality Supervision System Certification, and gained Pressure Pipeline Elements Manufacture License, IRIS cert. and CE cert., and so on...