On June 1, Hualu Hengsheng Chemical Co., Ltd. announced its latest ex-factory prices for ammonium sulfate: caprolactam-grade ammonium sulfate bulk material at 1,590 RMB/ton, with a price reduction of 30 RMB/ton; power plant-grade ammonium sulfate at 1,065 RMB/ton, with a stable price. Actual transaction prices are negotiable.