Beijing has tightened controls over fentanyl precursors destined for countries in North America following the recent summit in South Korea between the US and Chinese presidents. The Ministry of Commerce announced on Monday that China would make adjustments to the catalogue of drug-related precursor chemicals and require licences for the export of certain chemicals to the United States, Canada and Mexico. Specifically, exports of 13 chemicals to the three countries now require a permit, according…
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