At the same time, the decision-making level of the company leads to easy operation in a single industry and diversified products. In 2000, the company began to introduce the original breeding pigs with double muscles and double buttocks from the United States and Canada, and set up the original breeding farm. In June 2003, Shandong Lunan Breeding Co., Ltd. was established in Zaozhuang City, Shandong Province, with a stock of 2,600 basic sows, ranking first in Shandong Province. 200 1 Shandong Holstein Dairy Breeding Center Co., Ltd. was established to introduce high-yield dairy cows from the United States and Australia for embryo transfer; June 5438 +2005 10, Shandong Yishengtang Pharmaceutical Co., Ltd. was established, and successfully passed the acceptance of the GMP acceptance expert group of veterinary drugs of the Ministry of Agriculture. This time, three workshops and seven production lines were accepted. In 2004, Shandong Yisheng Institute of Livestock and Poultry Diseases, with a high level of domestic technology, was established. Yantai Yishengyuan Dairy Co., Ltd. was established in June 2005. In 2007, Shandong Yisheng Plant Tissue Culture Technology Development Co., Ltd. was established.
After several years of ups and downs, Yisheng decision-makers led the company to grow from a little-known chicken farm to a national key enterprise of comprehensive agricultural industrialization integrating ancestral broilers, ancestral laying hens, parents' breeders, breeders with double muscles and buttocks, ancestral pigs, feed, veterinary drugs, Holstein cows, dairy processing, livestock and poultry disease research institute and zero pollution cycle of livestock and poultry breeding.