This product is a chemically defined medium specifically designed for the efficient, directed differentiation of pluripotent stem cells (such as hESCs or iPSCs) into functional chondrocytes. Its core formulation precisely regulates key signaling pathways like TGF-β/BMP to effectively mimic the in vivo microenvironment of cartilage formation. This enables stable, reproducible sequential differentiation of cells into mesodermal precursors, chondrogenic progenitor cells, and ultimately mature chondrocytes. It significantly promotes the expression and deposition of cartilage-specific extracellular matrix components, including type II collagen (Col2a1) and aggrecan (Aggrecan).