The product has strong alkaline, strong hygroscopicity, soluble in acid, insoluble in water, insoluble in alcohol. The use of special production process, less impurities, fine fineness. Products are widely used in flue gas desulfurization, waste incineration, sewage treatment, acidic water and other fields. Can also be used to effectively remove phosphate, sulfate and fluoride anions such as wastewater treatment, flocculation effect is better than that of sodium hydroxide solution, sodium hydroxide solution compared with the use of lower cost.