According to the Regulations on the Safety Management of Hazardous Chemicals (State Council Order No. 591), customs are responsible for inspecting the import and export of hazardous chemicals and their packaging.

When the consignee or its agent of hazardous chemicals declares import clearance, the information to be filled in should include the hazardous category, packaging category (excluding bulk products), and the United Nations Dangerous Goods Catalogue

Number (UN number), United Nations dangerous goods packaging mark (UN mark) (excluding bulk products), etc