This product is a serum-free medium precisely engineered for the in vitro expansion of chondrogenic progenitor cells. Its core formulation efficiently supports rapid cell proliferation and maintenance of stem cell properties, ensuring stable preservation of multi-lineage differentiation potential—including chondrogenic and osteogenic differentiation—through serial passaging. The medium features clearly defined components and is entirely free of animal-derived ingredients, effectively mitigating risks of exogenous factor contamination.