On February 4th, 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 hike is driven by significant increases in the cost of raw materials, specifically potassium chloride and sulfuric acid, coupled with persistently tight market supply, leading to a continued upward trend in potassium sulfate prices.