Crude gypsum is used for a fluxing agent, fertilizer, filler in paper and textiles, and retarder in portland cement. About a few-fourths of the entire production is calcined to be used as plaster of paris and as making materials in plaster, Keene’s cement, board goods, and tiles and blocks. Crystal https://www.propanraya.com/id/produk/eco-gypsum-ee-4050