This product is a serum-free medium for MFF-8C1 cells, a specialized formulation developed based on the concept of chemically defined (CD) culture and designed specifically for high-density cultivation of the MFF-8C1 cell line and production of specific biopharmaceuticals. Its core formulation precisely regulates the metabolic networks and expression systems essential for these cells. This approach completely eliminates batch-to-batch variability and biosafety risks associated with serum introduction while effectively supporting efficient cell expansion and promoting stable, high yields of target products such as recombinant proteins and viral vectors.