April 20th - On April 20th, Shandong Luxi Chemical's latest ex-factory quotation for caprolactam-grade ammonium sulfate is 1,850 yuan per ton, an increase of 10 yuan per ton compared to last Friday. Actual transactions are primarily negotiated. Chempricehub analysis of ammonium sulfate, long-short score: 1. The quotation has increased by 10 yuan per ton to 1,850 yuan per ton compared to last Friday, indicating increased market demand or tight supply, providing favorable support for spot prices. Ammonium sulfate is mainly used in the fertilizer industry, and current peak agricultural demand or increased export demand may drive prices upward. The fact that actual transactions are primarily negotiated suggests enhanced market activity, and short-term prices may maintain an upward trend.