On March 4th, Hualu Hengsheng Chemical Co., Ltd. announced the latest ex-factory prices for ammonium sulfate. The price for caprolactam-grade bulk ammonium sulfate is 1,280 yuan/ton, an increase of 10 yuan/ton, while the price for power plant-grade ammonium sulfate is 1,175 yuan/ton, an increase of 40 yuan/ton. Actual transaction prices are subject to negotiation. Chempricehub's analysis of ammonium sulfate indicates a bullish-bearish score of 1.5. The article highlights that Hualu Hengsheng has raised the ex-factory prices for caprolactam-grade and power plant-grade ammonium sulfate by 10 yuan/ton and 40 yuan/ton, respectively, suggesting tightening market supply or recovering demand, which provides significant positive support for spot prices. The substantial price increase (40 yuan/ton for power plant-grade) reflects the company's strong intention to maintain higher prices, likely driven by rising raw material costs or increased downstream procurement. It is expected that the spot market will maintain a relatively strong trend in the short term.