Gypsum is a calcium sulphate mineral in non-metallic sulphates. It is widely used: in building materials, such as cement retarder, gypsum products for construction and cementing materials; as the soil improver, fertilizer and
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Gypsum is a calcium sulphate mineral in non-metallic sulphates. It is widely used: in building materials, such as cement retarder, gypsum products for construction and cementing materials; as the soil improver, fertilizer and