Yangshengtang Group is not a Fortune 500 company. According to the information about the world's top 500 companies, it is known that there is no Yangshengtang. Yangshengtang Group takes research as the core and the industrialization of scientific research achievements as the guide. There are 63 doctors and postdocs, the only hepatitis E vaccine in the world and the first cervical cancer vaccine independently developed and marketed in China.