Linyi Dongcheng Dongyuan Biological Engineering Co., Ltd., established in November 1, 2005, located in Linyi Yinan County Economic Development Zone, is a wholly owned subsidiary of Yantai Dongcheng Pharmaceutical Group Co., Ltd. Its business scope mainly covers the processing and sales of polysaccharide, protein and amino acid bio-engineered products from animals and marine fishes. It is an enterprise integrating the production and processing; and owns the advanced production and quality testing equipment, with the leading output and scale in the industry.