Daan Gene Co., Ltd. and its subsidiaries research, develop, manufacture, and sell clinical test reagents, instruments, and supporting consumables in China. It operates in two segments: Biological Products and Related Business, and Financial Business. The company offers PCR testing kits for hepatitis virus, HPV, sexually transmitted infections, HIV, blood screening, respiratory infections, digestive pathogens, public health, COVID-19, tumor markers, pharmacogenomics, nucleic acid extraction, and viral transport medium collection. It also provides molecular diagnostic instruments such as PCR detection systems, nucleic acid extraction systems, and sample transfer processing systems, as well as immunoassay test kits including COVID-19 rapid tests, pathology tests like liquid-based cytology production and automatic sample transfer machines, and auto biochemistry analyzers. Products are sold under the Daan Gene, Darui Biology, LBP, and Zhongshan Bio-Tech brands. Formerly known as Da An Gene Co., Ltd. of Sun Yat-Sen University, the company was incorporated in 1988 and is headquartered in Guangzhou, China.