It is a basic raw material for producing various potassium salts such as potassium carbonate and potassium persulfate. The glass industry is used as a sinking agent. The dye industry is used as an intermediate. The perfume industry is used as an auxiliary agent. The pharmaceutical industry is also used as a laxative to treat soluble bismuth salt poisoning. Potassium sulphate is a commonly used potassium fertilizer in agriculture. The potassium oxide content is 50%, which is commonly known as "Baijiali" in Taiwan. In addition, potassium sulfate is also used industrially in glass, dyes, perfumes, medicines, and the like.

Potassium sulphate is a colorless crystal, has low hygroscopicity, is not easy to agglomerate, has good physical properties, and is convenient to apply, and is a good water-soluble potassium fertilizer. Potassium sulphate is also a chemically neutral, physiologically acidic fertilizer. Potassium sulphate is a kind of chlorine-free, high-quality and high-efficiency potash, especially in the cultivation of chlorine-sensitive crops such as tobacco, grape, sugar beet, tea tree, potato, flax and various fruit trees. It is also an indispensable important fertilizer; it is also high quality. The main raw material of nitrogen, phosphorus and potassium ternary compound fertilizer.

Potassium sulphate type compound fertilizer is produced by low temperature conversion, chemical synthesis and spray granulation process of potassium chloride. It has good stability and contains S, Ca, in addition to the three major nutrients such as N, P and K which are necessary for plants. , trace elements such as Mg, Zn, Fe, Cu, etc. This fertilizer is suitable for a variety of cash crops, especially for chlorine-sensitive crops. The main components of the potassium sulfate type compound fertilizer are MAP (monoammonium phosphate) DAP (diammonium phosphate), ammonium sulfate (mainly obtained by low-temperature conversion of surplus sulfuric acid and gas ammonia). Potassium sulphate, urea and the like also have some small amounts of impurities such as calcium sulphate, iron, aluminum, magnesium and other salts of phosphate and a small amount of unreacted potassium chloride.