Lung Yun established in July 1981, specialized field in manufactured mechanical parts of carbon steel, alloy steel , stainless steel , etc and castings of motor parts , extend to flange on 1985 , platform trailor parts on 1987. Early 1990, beginning to produce stainless steel ball valves and various of valves additionally . Upgrading technique, professional R&D , and perfect of service, to win credits and admirations from world wide of customers.