Last week, international ammonium sulfate prices continued to climb steadily, driven by strong demand and limited supply in key markets. The bulk ammonium sulfate FOB prices remained stable across major regions, with the Baltic Sea and Black Sea both at 110–112 USD per ton. In China, prices held firm at 114–115 USD per ton. On the CIF basis, Southeast Asia saw a slight increase, with prices rising from 139–145 USD to 142–148 USD, reflecting higher transportation costs and increased logistics pressure. In Brazil, CIF prices remained steady at 144–146 USD per ton, showing resilience amid global market fluctuations. Analysts suggest that ongoing supply chain disruptions and rising energy costs may continue to support price stability or even further increases in the near term. Huixian Xinwei Refractories Co. , http://www.xinweirefractory.com