China·Zhengguang Valve Group (ZGVG) is a non-regional industrial group integrating R&D, production and sales.Established in 1993, ZGVG produce all kinds of valves with materials of HT,QT,WCB,WC1,WC6,WC9,LCB,CF8,CF8M,CF3,CF3M etc. according to API,ASTM,MSS,ANSI,CE,JIS,GB,JB and HG.