Tengsheng Boyao Biotechnology Co., Ltd. is a biotechnology company headquartered in China and the United States, mainly engaged in infectious disease therapy research and development business. The company's products are used in infectious diseases (such as hepatitis B virus (HBV), human immunodeficiency virus (HIV), multidrug-resistant (MDR) or extensively drug-resistant (XDR) Gram-negative bacteria infections) and other diseases with significant public health burdens, such as central nervous system (CNS) diseases. The company also develops treatments for COVID-19 and others.