The product is produced after purification and aluminium adjuvant adsorption of the main capsid protein L1 of human papillomavirus (HPV) type-6, type-11, type-16, and type-18 expressed by Hansenula polymorpha, with no preservative contained.

It can prevent cervical/vaginal precancerous lesions, as well as cervical cancer, and genital warts, etc., that are caused by the above-mentioned human papilloma viruses.