Regulatory Changes - China's Ministry of Commerce adjusted the "Management Directory of Exporting Precursor Chemicals to Specific Countries (Regions)" and the "Directory of Specific Countries (Regions)" [1] - The United States, Mexico, and Canada were added to the "Directory of Specific Countries (Regions)" [1] - Thirteen types of precursor chemicals specifically targeting the US, Mexico, and Canada were added [1] - Chemicals numbered 1, 2, 4, and 8-13 in Annex 1 are precursors to fentanyl-related substances [1]