Hualan Biological Vaccine Inc. is a Chinese company engaged in the research, development, production, and sale of vaccines and genetically engineered biological products. Its main products include influenza virus split vaccine, quadrivalent influenza virus split vaccine (including a pediatric formulation), H1N1 influenza A virus split vaccine, ACYW135 group meningococcal polysaccharide vaccine, recombinant hepatitis B vaccine (Hansenula polymorpha), group A and C meningococcal polysaccharide vaccine, freeze-dried human rabies vaccine (Vero cells), and adsorbed tetanus vaccine. The company also has products under development, such as freeze-dried Group A and Group C meningococcal conjugate vaccine, adsorbed cell-free tridiphtheria-tetanus combined vaccine, freeze-dried Haemophilus influenzae type b conjugate vaccine, recombinant zoster vaccine (CHO cells), mRNA influenza vaccines, adsorbed tetanus vaccine, and novel adjuvanted influenza vaccines. It also sells self-produced products. Founded in 2005, the company is based in Xinxiang, China.