Yuhui A-SMT is a premium grade macroporous weak base anion (WBA) exchange resin based on styrene-divinylbenzene (DVB) copolymers with tertiary amine (Dimethylamine) functional group and standard Gaussian particle size distribution. Due to the special functional group, A-SMT has excellent regeneration efficiency. Its macroporous matrix structure offers the optimal performance on resistance to both osmosis shock and organic fouling. A-SMT is developed to be used for industrial water demineralization as the pretreatment before SBA bed.