Crude gypsum is used like a fluxing agent, fertilizer, filler in paper and textiles, and retarder in portland cement. About 3-fourths of the full manufacturing is calcined to be used as plaster of paris and as making components in plaster, Keene’s cement, board products and solutions, and tiles and blocks. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050