The Gongzheng Industrial CO.,Ltd established 2007,located in Wenzhou,China .we are specialized in various kinds of valve s .We mainly export ball valve ,buttfly valve ,gate valve etc.As one of the leading independent suppliers of ball valves ,butterfly valves ,check valves ect . we insist to provide our client sincerely service , reasonable price ,hight quality products . Our products adopt advaced domestic and inernational standards ,such as GB,API ,JIS,DIN,BS,NF and ANSI,etc.,They are applied to many kinds of media,like water ,oil petroleum ,chemical ,steam etc .The OEM &ODM can be accepted ,Welcome you inquiry us ,it will be our honor if we can get a chance service for you .