We are a comprehensive factory in shanghai, we have some good cooperation and experience with some Europe company. Following is details of our company:Zhongrui International Limited, a comprehensive manufacturer, specialized in all kinds of valves, check valves, spare parts,check valve spare parts, pumps ,check valve pressure, control valves, pressure reducing valve, consistent conformed to international and national standards, we gained worldwide market, the past years, 90% of our products offered for Europe, America, Middle east, Southeast Asia. Our check valve quality and service reliability are essential to the success of our business, then we strictly control every check valve procession such as the purchasing of check valve raw material, the development of check valve innovative designs and the advanced check valve checking method and so on, we consider it is our company’s life to give every customer fully satisfacted with our check valve.Products range: valve, check valve, check valve spare parts, pump, Fitting, Sanitary ware, Pipe etcMaterials(casting):WCB,WCC,LCB,LCC,LC1~3,CF8,CF3,CF8M,CF3M,CF8C,CN7M,CA15,C5,WC5,WC6,WC9,GR4A,etcMaterials(forging):A105,LF1,LF2,F11,F22,F5,F304,F304L,F316,F316L,F316H,F321,F347,F51,F60,etcAccording to the different project and different medium, we effectively meet customer’s requirements with RT, UT, MT, PT test standard.The remarkable quality and service are the Zhongrui’s forever pursue. We will high appreciate for your suggestion and information for check valve.