In the case of merchandise such as commercial cargo being imported into or exported from Mexico, those importing or exporting the goods must present them to the customs authorities together with the appropriate licence.
进出口贸易商品应出示物品和申报单，申报单上须指明数量、价值、物品种类和所交的税，物品抽查是任意的，可能要经第二次任意抽查。