Chongqing Zhifei Biological Products Co., Ltd. is a biopharmaceutical company based in Chongqing, China, founded in 2002. It engages in the research, development, production, sale, and distribution of vaccines and biological products in China. Its offerings include a recombinant COVID-19 vaccine, recombinant mycobacterium tuberculosis fusion protein products, group A and C meningococcal polysaccharide vaccine, ACYW135 meningococcal polysaccharide vaccine, Haemophilus influenzae type B conjugate vaccine, mycobacterium injection under the Vaccae brand, and meningococcal group A and C conjugate vaccine. The company also provides cold storage, refrigerated vehicles, cold roll boxes, and customs clearance and registration services for imported vaccines.