The natural gypsum powder includes anhydrous gypsum and CaS04.2H2O, if you want to commercialize the gypsum powder, you should adopt the CaS04.2H2O, after removing part of water by heating, it will become CaS04.12 H20. CaS04.12 H20 is the final product which you can use it to produce gypsum board other gypsum product. After calcining, CaSO4.12H2O is widely used in paper faced gypsum board and gypsum block and painting gypsum powder and model. Natural gypsum generally includes dehydrate gypsum and anhydrous gypsum. In order to get the valuable materials, generally,