Gypsum Is actually a tender sulfate mineral made up of calcium sulfate dihydrate, Using the chemical formula CaSO4·2H2O.[four] It can be greatly mined and is particularly applied as being a fertilizer and because the principal constituent in several sorts of plaster, drywall and blackboard or sidewalk chalk. Whether or not https://www.propanraya.com/id/produk/eco-gypsum-ee-4050