Gypsum is generally Protected to take care of, but safety measures must be taken to prevent inhaling dust, which could trigger respiratory discomfort. Donning protecting masks and making sure great ventilation are advisable for the duration of managing and processing. Crystal Program: Gypsum crystals belong for the monoclinic crystal method. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050