Qingdao Unique Valves Manufacturing Co.,Ltd,established in 1990, is a professional manufacturer and exportor in qingdao area of China, we are mainly specialized in producing all kinds of cast iron/ductile iron gate valves, butterfly valves,globe valves, check valves, strainers, ball valves, air valves,etc. Our valves are accordiance with ANSI,MSS,API,DIN,BS,AWWA standards.