Ningbo Sanan Valve Manufacure Co., Ltd.(former name:Xiangshan Valve Manufacture Co., Ltd.), founded in 1972. is specialized in researching on and producing gas cylinder valves, gas fire-extinguishing valves, and the vehicles-compressed natural gas(CNG) ***** is one of the largest gas valve cylinder manufacturers in China. It is a member unit to China Gas Cylinder Professional Committee, China Gas Cylinder Standard Technical Committee and Fittings Branch Committee. The company is located in Xiangshan Economic Development Zone, Zhejiang, China, and covers an area of 38, 000 square meters with 29, 000 square meters of the building area. It has set up Gas Valve Research Center and owns the most advanced valve laboratory in this industry. Moreover, it adopts the fully automatic machining center, the high precision NC machine tool to manufacture the ***** annually produces 3 million sets of the ***** relies on the ISO9001 Quality Management System and the Pressure Container Quality Control ***** strictly organizes the production according to the internationally advanced standard and first passed ISO15500 ***** product quality is in the lead in China and strives to reach the advanced level in the world.