Shenyang Hefeng Animal Husbandry adopts an operating model of self-raising breeding pigs and free-range fattening pigs (the company’s family farm). According to relevant public information, Hefeng Animal Husbandry's pig breeding business adopts an operating model of self-raising breeding pigs and free-range fattening pigs (the company's family farm), and implements "five unifications" management, that is, unified construction of pig houses, unified supply of piglets, and unified supply of feed , unified feeding and management, and unified recycling of commercial pigs. Liaoning Hefeng Animal Husbandry Co., Ltd. (hereinafter referred to as "Hefeng Animal Husbandry") is a national-level key leading enterprise in agricultural industrialization. It is the vice-president unit of China Feed Industry Association and China Animal Husbandry Association. In 2016, it was rated as one of the top ten enterprises in the country. A leading feed company, the "Hefeng" trademark is a well-known trademark in China.