Gypsum Is usually Safe and sound to handle, but safeguards should be taken in order to avoid inhaling dust, which could lead to respiratory irritation. Donning protective masks and guaranteeing excellent ventilation are recommended in the course of managing and processing. Impurities in refinery gypsum waste have, in many circumstances, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050