Product Introduction (SA-Biotin) system has extremely high binding affinity (Kd=10^-15), It has a wide range of applications in the biological field. Sunlong Biotech™ Streptavidin covalently connects the SA to the solid carrier surface by using the protein coupling technique of Sunlong, which can efficiently bind the ligands such as biotinylated antibodies, nucleic acids, proteins etc. The product adopts superparamagnetic microspheres with uniform size and regular morphology, which facilitates the rapid and convenient capture of target molecules and the realization of magnetic separation. This product can be equipped with automation equipment for high flux operation.