ZheJiang DunAn HuaQiang machinery Co.,Ltd be holded by Dunan Holding Group. It is a professional manufacturer of various of brass valve and fitting. It is vice director member of Valve Professional Committee of China Construction and Metal Configuration Association and a member of China General Valve Association and China City Gas Association. It was approved by CE, ISO9001 certification and introducing TQM system into management system and getting the permission for manufacturing special equipment prior to other valve manufacturers. It won the famous brand in the field of Chinese Construction Material and been pointed as a "pointing manufacturer in brass valve line " by feedwater and draining sub-association of China Construction and Metal Configuration Association. DunAn HuaQiang Machinery Co.,Ltd founded the famous valve brand DunAn and KaTong basing on modern management idea, modern equipment and eximious quality consciousness.