Gypsum Is a gentle sulfate mineral made up of calcium sulfate dihydrate, Using the chemical method CaSO4·2H2O.[four] It's widely mined which is applied for a fertilizer and because the primary constituent in many forms of plaster, drywall and blackboard or sidewalk chalk. Cement Manufacturing: Sure sorts of cement, Particularly Portland https://www.propanraya.com/id/produk/eco-gypsum-ee-4050