January 28th News On January 28th, the mainstream ex-factory price of 52% powder potassium sulfate rose to 3,950–4,150 yuan/ton, an increase of 50 yuan/ton. Driven by the significant price hikes of raw materials potassium chloride and sulfuric acid, market supply remains tight, leading to a continuous rise in potassium sulfate prices. **Chempricehub Analysis** **Potassium Sulfate, Bull-Bear Score: 1** The article indicates that the ex-factory price of 52% powder potassium sulfate has increased by 50 yuan/ton to 3,950–4,150 yuan/ton. This is primarily due to the significant price hikes of raw materials potassium chloride and sulfuric acid, which have driven up production costs. Additionally, the ongoing tightness in market supply supports the upward price trend. This reflects favorable factors such as supply tightness in the spot market and cost-driven pressures, suggesting that prices may continue to strengthen in the short term, providing a generally positive outlook for spot prices. **Potassium Chloride, Bull-Bear Score: 1** As a key raw material for potassium sulfate, the significant price increase of potassium chloride directly drives up the production cost of potassium sulfate, indicating tight supply or strong demand for potassium chloride itself. Although the article does not specify the exact price increase, raw material price hikes typically stem from supply-demand imbalances, providing a generally positive support for potassium chloride spot prices and potentially stimulating market purchasing activity. **Sulfuric Acid, Bull-Bear Score: 1** The significant price increase of sulfuric acid is one of the main factors contributing to the rise in potassium sulfate production costs, reflecting supply shortages in the sulfuric acid market or strong industrial demand. While the article does not provide specific data on sulfuric acid, the upward trend in raw material prices indicates that sulfuric acid spot prices are under upward pressure, presenting a generally positive outlook for the spot market and potentially driving cost transmission across related industrial chains.