Today, SUNGO is one of the Asia's leading manufacturers of industrial steel valves with five specialized manufacturing plants,including hree in Wenzhou , two in Shanghai. We have 680 employees. We owe much of our success to quality and innovation, which have been the cornerstone of SUNGO since its inception in 1980, and to our philosophy of dynamic leadership. We concentrate on one business the design, manufacture and marketing of steel valves in a broad range of types and sizes, demanding advanced technology. has fulfilled all the qualifications to manufacture a wide range of industrial valves for the most severe and demanding services of the Oil, Gas, Refinery,Chemical, Marine, Power and Pipeline Industries.