Yuhui A-SMFE is a premium grade macroporous iron oxide impregnated anion exchange resin based on styrene-divinylbenzene (DVB) copolymers with standard Gaussian particle size distribution. Due to its special hydrous iron oxide nanoparticles, A-SMFE has high selectivity to capture arsenate and arsenite from water. The arsenic is captured by ion exchange functional sites firstly and then fixed by the iron oxide dispersed throughout the resins. A-SMFE is developed to be used for arsenic removal from ground water or waste water without regeneration.