It is an ion exchange resin with sulfonic acid,which is on the styrene-divinylbenzene copolymer matrix.It is mainy used in water solftening,water desalting,the preparation of the purity water anf high purity water,as well as served as a catalyst,dehydrant and in the separation and purification of rare elements in hydro-metallurgy,pharmaceutical,biochemical and sugatr refinery and other industries.