Dong's Iron Plating Co., Ltd of Dalian Maritime University found in 1992, it belongs to Dalian Maritime University, and it is also the depended unit of Liaoning Iron Plating Technology Researching Institute. And it is the student practice base of the Marine Engineering College of the university. And it is also the Key Laboratory of Ship-Machinery Maintenance & Manufacture of the Ministry of Communication, PRC. The company takes "Dong's Iron Plating without Etching Technology" as core technique to remanufacture crankshaft, straight shaft, camshaft, con-rod, piston rod, engine block and such mechanism parts of various types engine.

And our company had got the Work Approval Certificates of China Classification Society, Lloyd's Register and Russian Maritime Register of Shipping; and it was authorized as the pointed workshop to remanufacture locomotive crankshaft by the Railway Station, and was qualified as the equipment recondition supplier by the China National Offshore Oil Corporation.

Dong's Iron Plating Co., Ltd of Dalian Maritime University had set branch companies and branch office in Shen zhen, Shang hai, An shan. And it service areas including Ship, Railway, Military industry, Automobile, Oil field, Metallurgy, Mine and such industries.

By this technology, Dong’s Iron Plating Co.,Ltd of Dalian Maritime University together with its subsidiary companies had remanufactured more than 7000 pieces of big size diesel crankshafts and tens of thousands of other spear parts. Practice has proved that this technology is the practical, stable and reliable technology for remanufacturing components and parts of engine. stable and reliable for the big size components and parts.

In 2004, this technology had been exported to Greece. In 2010,this technology had been transferred to CNPC Jichai Power Equipment Company.