Cell-Box's imported bovine serum products are all selected from countries and regions that are not infected by animal diseases such as BSE, FMDV, and BVDV; It is also one of the countries where China's import and export supervision authorities allow the legal import of bovine serum and related products. Cell-box bovine serum product can provide Chinese customs import declaration, product quality inspection certificate and other valid certificates. In addition, cell-box's bovine serum products have strict quality control requirements before selling. The finished products of each batch of serum will be selected to observe the culture of some nerve cells, primary cells, breast cancer cells, sp2/0-ag14 and other suspension cells, and then sold after the growth rate and morphology of cells are well observed. Within 24 months after the sale of each batch of serum, a portion of the finished product will be randomly selected and stored in the -80℃ retention sample. Under normal circumstances, Cell-Box's strict quality control standards and ingenuity provide high-quality, cost-effective products for scientific researchers to ensure the high quality and safety of each bottle of animal serum.