This product series is based on biological nanosurface technology independently developed by Beaverbio. The surface of cell culture was modified by natural active polypeptides, carbohydrates and other high molecular materials. Thus, the cell culture plate has the ability of ultra-low cell attachment and the suspension culture of cells in serum culture system was realized. It can be used in the suspension culture of adherent cells and semi-adherent cells in the sphere culture of tumor cells and the experiment of embryoid body formation.