ACF+RO composite filter cartridge (100 gallons): intercepts small particle impurities such as colloids, scaling impurities, and carbon powder; Adsorb residual chlorine, color and odor, organic pollutants, efficiently filter bacteria, viruses, heavy metals, antibiotics, pesticide residues, while maintaining stable purification ability, with a filtration accuracy of up to 0.0001 microns, effectively filtering out 110 harmful substances;