China, the Iran war and the chemical suddenly stoking global supply fears

China’s reported decision to halt sulphuric acid exports, together with the failure of peace talks between the United States and Iran over the weekend, risks driving prices higher and disrupting global mining and fertiliser supply chains that have few readily available alternatives. Beijing had indicated it would halt shipments of sulphuric acid from May, according to reports from Acuity Commodities and Bloomberg, though no official announcement has been made. Economists said food security sat...