Denghai Liangyu 99 is operated by one company. According to the relevant public information, Dandong Denghai Liangyu Seed Industry Co., Ltd. was established in December 23 and is a subsidiary of Shandong Denghai Seed Industry Co., Ltd. His predecessor, Dandong North Corn Research Institute, was founded in 1997. It is a corn franchise company engaged in the breeding of new hybrid corn varieties, integrating scientific research, production and management. It is a national leading enterprise in agricultural industrialization, a national high-tech enterprise, and Liangyu trademark is a famous trademark in Liaoning Province.