Yuhui A-AT is a premium grade gel-type weak base anion (WBA) exchange resin based on acrylic-divinylbenzene (DVB) copolymers with tertiary amine (Dimethylamine) functional group and standard Gaussian particle size distribution. Due to its special polyacrylic matrix structure, A-AT has excellent efficiency on adsorption and desorption of natural organic substances. Due to the special function group, A-AT has excellent regeneration efficiency. A-AT is developed to be used for industrial water demineralization with high organics content as the pretreatment before SBA bed.