Potassium sulphate compound fertilizer is produced by low-temperature transformation, chemical synthesis and spray-coating process. It has good stability and contains three main nutrient elements, namely N, P and K, which are essential for plants. , Mg, Zn, Fe, Cu and other trace elements. This fertilizer is suitable for a variety of economic crops, especially avoid chlorine crops. The main components of potassium sulfate compound fertilizer MAP (ammonium phosphate) DAP (DAP), ammonium sulfate (mainly low-temperature conversion of surplus sulfuric acid and gas ammonia obtained). Potassium sulfate, urea and other small amounts of impurities, such as calcium sulfate, phosphoric acid, iron, aluminum, magnesium and other salt and trace of complete reaction of potassium chloride.