Yuhui A-SQ7-U is a premium grade gel-type strong base anion (SBA) exchange resin based on styrene-divinylbenzene (DVB) copolymers with quaternary amine (Trimethylamine) function group and standard Gaussian particle size distribution. Its 7% cross-linkage offers the better performance on the resistance to oxidation comparing to A-SQ4-U. Due to the special jetting technology, A-SQ7-U has extremely uniform particle size, which increase the kinetics and efficiency of regeneration, and decrease pressure drop effectively. A-SQ7-U is developed to be used for industrial water demineralization when it works in hydroxide form and to remove anions when it works in chloride form, including sulfate, nitrate, arsenate, chromate and silicate.