Hunan Zhongchang Biotechnology Co., Ltd. is a national high-tech enterprise specializing in the research, development, production and sales of in vitro diagnostic reagents. The company is located in Changsha City, Hunan Province, China.

The company's in vitro diagnostic products cover colloidal gold detection kits, immunofluorescence detection kits, chemiluminescence detection kits, etc. Its products are exported to many countries and regions around the world and are widely used in primary medical care, intensive care, clinical testing, and epidemic monitoring., blood bank, disaster relief, on-site law enforcement, family personal health management and other fields.