Harbin Veterinary Research Institute (HVRI) of Chinese Academy of Agricultural Sciences (CAAS), the earliest research institute of animal preventative medicine in China, was established in 1948. In its 60 years of development, from the eradication of Rinderpest, Contagious Bovine Pleuropneumonia (CBPP) and Equine Infectious Anemia (EIA) to today's prevention and control of Avian Influenza (AI) and Porcine Reproductive and Respiratory Syndrome (PRRS) disease, Harbin Veterinary Research Institute has always been in the leading position of Chinese Preventive Medicine of Animals.Founded in 1992, Harbin Weike Biotechnology Development Company is located in Harbin. It is a state-owned high-tech enterprise subordinated to Harbin Veterinary Research Institute, CAAS, dedicating to R&D, production, promotion sales, technical advice and services of biological engineering and products related to animal preventative medicine. Weike Company has a registered capital of 30 million RMB with 476 staff currently, of which 90% have college education, more than 60% of them have senior technical title, and 37 experts have doctorate or master's degrees. Weike Company is the production and technical support unit of avian influenza vaccines designated by the Ministry of Agriculture of China, and the sole production unit of the whole series of avian influenza vaccines. Its production lines have passed the Veterinary Medicine GMP Dynamic Acceptance of the Ministry of Agriculture and have been awarded with veterinary medicine GMP certificate. Weike Company possesses modern GMP live vaccine production workshop, inactivated vaccine production workshop and avian influenza vaccine production workshop. The company can produce 33 billion doses live vaccine and 6 billion doses inactivated vaccine every year.Weike Company implements full control of key points from raw materials procurement, production, testing and marketing. All of the live vaccines are produced with SPF chicken embryos,