... No leakage ISO9001 and ISO14001 Approveed J06109 Union end Brass Water Meter Gate Valves 1.Material: C3771, C37700N, CW614N, CW617N, as per ... . A Valves’ service life testing B100%sealing performance test and 100% leakage test C Annual R&D projects reach the number of ... Bird Nest, Olympic Village, Shanghai World Financial Center, etc. 8. 15 years rich experience of OEM &ODM Established in 1998, Ningbo ...