China tightens export controls by adding two fentanyl-related precursor chemicals to a list requiring export licenses for shipments to the United States, Canada and Mexico. The change is announced by China’s Ministry of Commerce along with several other agencies and takes effect immediately, according to reports.

The new chemicals are added to part one of China’s Catalogue for the Administration of Exports of Precursor Chemicals to Specific Countries (Regions). The move comes days before President Xi Jinping’s announced visit to the United States and ahead of a planned meeting with US President Donald Trump. Outlets describe the policy as an expansion of Beijing’s regulation of substances that can be used to make illegal drugs, with licensing aimed at increasing oversight of cross-border trade.

While the reports largely agree on the timing, the destinations affected, and that the two newly listed chemicals now require permits or licenses, they differ slightly in emphasis. Some outlets foreground the lead-up to the Xi–Trump meeting, while others focus more directly on the licensing requirement and the specific destination countries.