Calcination: The Powdered gypsum is heated to remove drinking water molecules, developing distinctive kinds of plaster according to the temperature and length of heating. Reactivity: It is chemically steady less than ordinary disorders but reacts with sulfuric acid, forming extra soluble calcium sulfate. With no therapy, it will eventually discolor https://www.propanraya.com/id/produk/eco-gypsum-ee-4050
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