Gypsum Is really a gentle sulfate mineral composed of calcium sulfate dihydrate, Along with the chemical system CaSO4·2H2O.[4] It really is greatly mined and it is applied as being a fertilizer and as the principal constituent in several sorts of plaster, drywall and blackboard or sidewalk chalk. Regardless of whether https://www.propanraya.com/id/produk/eco-gypsum-ee-4050