Judging from the current market situation, the domestic ring vaccine Nannong Hi-Tech is better. It was developed by Professor Pingjiang of Nanjing Agricultural University. 10 years later, it is also the first round patented vaccine in China. Hounan agricultural high-tech is jointly developed with Nanjing Agricultural University. Since the listing of 20 10 in June, the market response has been good and it has been widely praised by farmers. At present, it has occupied most of the market share, which is the same as that of imported Miao Bolinger. But the price is more than three times cheaper than the Boehringer vaccine. At present, the market only sells one copy from 8 yuan, which can meet the demand of China market and bring better benefits to farmers.