Group 1 - The first domestically produced nine-valent HPV vaccine in China has been approved, marking it as the second in the world [1] - A head-to-head study published in The Lancet Infectious Diseases indicates that the domestic nine-valent HPV vaccine has comparable efficacy and safety to the imported version [1][16] - The anticipated price for the domestic vaccine is around 700-800 yuan per dose, significantly lower than the imported vaccine priced at approximately 1300 yuan per dose [1] Group 2 - The study involved 488 healthy women aged 18-26, who were randomly assigned to receive either the domestic or imported vaccine, with a 100% seroconversion rate observed in both groups [16][17] - The domestic vaccine, developed using a novel E. coli expression system, offers advantages such as shorter production cycles and lower costs, making it more accessible for eligible women in China [17]