Based on the current market usage, the domestically produced ring vaccine from Nannong Hi-Tech is better. It was developed by Professor Jiang Ping of Nanjing Agricultural University after more than 10 years. It is also the first ring patented vaccine in China. Developed by Hounan Nong Hi-Tech in cooperation with Nanjing Agricultural University, it has received good market response since it was launched in October 2010 and is generally well received by farmers. It currently occupies the majority of the market share and is equally divided with the imported Boehringer vaccine. However, the price is more than three times cheaper than the Boehringer vaccine. Currently, it only sells for 8 yuan per cent in the market. It meets the needs of the Chinese market and can serve the vast majority of people. Better welfare for farmers.