GemPharmatech Co., Ltd., a contract research organization, provides genetically engineered mouse models and preclinical research services to the scientific community worldwide. The company offers mouse models, including knockout and conditional knockout mouse, disease mouse, immunodeficient mouse, germ-free mouse, and tool mice models, as well as operates wild mouse project. It also provides custom model generation, preclinical testing, germ-free and microbiome, cell lines and customization, custom breeding, animal quality testing, and other services. The company has a strategic alliance with Memorial Sloan Kettering Cancer Center (MSK) to accelerate the discovery of new therapeutic antibodies. The company was founded in 2017 and is headquartered in Nanjing, China.