Calcium Sulfate Powder is a powder material made from natural gypsum ore through crushing, grinding, calcination and screening, divided into three categories: dihydrate calcium sulfate, hemihydrate calcium sulfate and anhydrous calcium sulfate, with calcium sulfate content ≥95%, whiteness ≥85% and fineness passing 325–2000 mesh sieve. Featuring fast setting, high strength and fire retardancy, the initial setting time ≥3min and final setting time ≤30min (construction gypsum). Widely used in building gypsum products, cement retarders, coating fillers and food additives (food grade), it is widely applied in construction, chemical and food industries, and is a basic raw material with both functionality and safety.