EX-8.1 3 a14-4385_1ex8d1.htm EX-8.1

Exhibit 8.1

List of Subsidiaries

1. |  | Sinovac Biotech (Hong Kong) Ltd., a Hong Kong company
2. |  | Tangshan Yian Biological Engineering Co., Ltd., a PRC company
3. |  | Sinovac Biotech Co., Ltd., a PRC company
4. |  | Sinovac Research and Development Co., Ltd. (formerly known as Beijing Sinovac Biological Technology Co., Ltd.), a PRC company
5. |  | Sinovac (Dalian) Vaccine Technology Co., Ltd., a PRC company