Xinxiang Yulong Machinery Co., Ltd. is a professional manufacturer in all kinds of casting parts, mainly including ductile iron, grey iron casting, cast steel, aluminum and alloy stainless steel etc. Our products are widely used auto engineering machinery mining engine valve pressure wheel ...

We are an investment castings and stamping parts factory in Dalian, China. can provide all kinds of products according to the customer's need. Our production technology is lost wax, sillicon shell fast melting applied. include machine components, butterfly valve bodies, pump pipe ...