On June 17, Hualu Hengsheng Chemical Co., Ltd. released its latest ex-factory quotes for ammonium sulfate: caprolactam-grade ammonium sulfate bulk material at 1,490 yuan/ton, down by 20 yuan/ton; power plant-grade ammonium sulfate at 1,095 yuan/ton, up by 10 yuan/ton. Actual transaction prices are negotiable.