Pre-activated resins enjoy broad application, flexible coupling with specific ligands, which dramatically improves purification specificity and provides huge application potential for affinity resins. Bestchrom agarose-based resins enjoy low non-specific adsorption as well as stable physical and chemical property, making them the ideal choice for base matrix. In the ligand coupling step, specific coupling method can be adopted according to property of ligands. Thus, customization is available for customers who will couple specific ligands on pre-activated matrix by themselves to meet their specific processing requirement.