Beijing Minhai Biotechnology Co., Ltd. is a wholly-owned subsidiary of Shenzhen Kangtai (stock code 300601). It is a listed company whose main business is the development, production and sales of biological vaccine products. The company was founded in 2004 and is located in the Beijing Daxing Bioengineering and Pharmaceutical Industry Base of Zhongguancun Science and Technology Park. It has a domestic new vaccine research and development center and a modern vaccine production base composed of more than a dozen GMP production workshops. The registered capital is 770 million yuan and the investment scale is nearly 1.9 billion yuan. It covers a total area of 235 acres and has 850 employees.