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 comany is a group company with three branches, the other is oil tool company, product the drill pipe for oil, bushing for oil, aiguille, heavey drill pipe etc,welcome domestice and abroad clients to contact with us and visit our company, hope we can establish long term business relationship! Our products include kinds of flanges, valves, marine hardware, construction hardware, house hardware, automobile part, motorcycle p...
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