Nanjing Prosper Import&export Corporation is a one leading company of China specializing in all kinds of Pipeline Materials to oil field and refinery as Steel Pipes, Pipe Fittings, Flange, Valves, Gasket, Petroleum Machinery, Fasteners and so on.With the excellent product quality and professional technical service, We have become qualified & steady supplier of some big Oil Companies and Oil Refining Enterprise . We warmly welcome friends from home and abroad to cooperate with us and create a bright future together.