Construction grade hydroxypropyl starch is the fastest growing industry in starch ether application industry. ZHUOJUN® ZJ-HPS is a kind of ionic hydroxypropyl starch, which is produced by a series of chemical and physical reactions with starch as raw material. It is non-toxic, tasteless white or beige power, which can be dissolved in cold water to form transparent or translucent viscous liquid. It is effective in thickening, adhesion, dispersion, emulsification, suspension, adsorption, surface activity, water retention and so on. And it is well compatible with other additives in gypsum or cement based building materials.