This product is a serum-free medium for HEK293 cells, featuring a specialized formulation developed based on the concept of chemically defined (CD) culture. It is designed to support high-density suspension culture of human embryonic kidney cells (HEK293) and enable efficient transient/stable transfection expression. Its core components precisely mimic the unique metabolic characteristics and rapid proliferation demands of HEK293 cells, optimizing key energy substrates, polyamines, and precursors required for recombinant protein expression. This significantly enhances transfection efficiency, recombinant protein/viral vector yield, and batch-to-batch consistency.