Dongying Haihe Machinery Co., Ltd located in Dongying Shandong China is a professional manufacturer of investment castings, lost wax castings or precision castings. And both of sodium silicate and silica sol process had been adopted. We mainly produce stainless steel castings, carbon steel casting and alloy casting.

Our products include kinds of flanges, valves, marine hardware, construction hardware, house hardware, automobile part, motorcycle part, hinge, devices for hydraulic press and for oil extraction, cross fitting, golf head and so on.