1996, Nannong, the registered trademark of experimental ranch of Nannong University, was transferred to Jiangsu Kangtai Food Co., Ltd. ... After a series of changes, Nannong Roast Chicken returned to Jiangsu Kangtai in 2005. However, in that year, because the annual inspection was overdue, "Jiangsu Kangtai" was revoked by the industrial and commercial department. On June 6, 2006, the trademark "Nannong" expired and no one proposed to renew it. Twenty days later, another food company applied to the State Trademark Office for registration of Nannong trademark. After three years of communication and consultation, Nanjing Agricultural University finally reached an agreement with the registered trademark food company to jointly establish "Nanjing Nannong Food Co., Ltd.". At this point, "Nannong Roast Chicken" officially returned to Nanjing Agricultural University.