Xiamen Wan Tai is bivalent and safe. Wan Tai bivalent is a domestic bivalent HPV vaccine, which is the first cervical cancer vaccine in China and the fourth in the world. Established by Xiamen Wan Tai Canghai Biological Co., Ltd. in 2002, it was successfully listed in Xiamen University on 20 19. After three rigorous clinical trials, technical review and investigation, Xiamen Wan Tai bivalent is safe. The bivalent HPV vaccine produced in Wan Tai is produced by the expression of Escherichia coli, which is widely used in genetic engineering and is also an extremely effective system for expressing recombinant proteins. The bivalent HPV vaccine produced in Wan Tai is one of several human papillomavirus vaccines that have been marketed in China. More people sign up for domestic clinical trials, and clinical data show that its adverse reactions are lower.