On February 9th, the mainstream ex-factory price of 52% powdered potassium sulfate rose to 3,950-4,150 yuan per ton, marking an increase of 50 yuan per ton. This price surge was driven by significant rises in the costs of raw materials, namely potassium chloride and sulfuric acid. Additionally, the market continues to experience tight supply, contributing to the ongoing upward trend in potassium sulfate prices.