Hebei Bolong Stainless Steel Precision Casting Factory, an ISO9001:2000 certified enterprise with scientific quality control management, specializes in developing, designing and manufacturing stainless steel Precision Casting products such as ball valves, pipe fittings and Flange for variety of industry applications reaching worldwide markets. Established in Oct.1997, we now have more than 150 employees, 10 advanced technologists. Reputation and quality are the life