Joyzyme Group Limited, an investment holding company, engages in the research, production, and sale of male fertility in-vitro diagnostic (IVD) reagents in the People's Republic of China. The company provides biological reagents, including male fertility IVD reagents, parasite antibody detection reagents, and Epstein-Barr virus antibody detection reagent; healthcare products and supplements; and auxiliary reproductive supplies and equipment. The company sells its products directly to hospitals and medical institutions, as well as to distributors. The company was formerly known as Huakang Biomedical Holdings Company Limited and changed its name to Joyzyme Group Limited in January 2026. Joyzyme Group Limited was founded in 1992 and is based in Tsim Sha Tsui, Hong Kong.