Tianjin Dunhui industry Co., Ltd. located in Tianjin City, China, is a professional manufacturer and trade for Casting, Forging flange, Manhole cover and grating, Pipe and fitting and Valve, scaffolding, crankshafts, Machining part, OEM part etc. These are popularly used for all kinds of Mechanical engineering, Automotive engineering, Building project, Road project, Urban water supply and we have done these lines for almost 12 years. The company registered capital of 2 million RMB.