A : UN mark is an international system created by the United Nations to classify packaging that can contain liquid and solid hazardous materials for safe air, road and sea transportation. The United Nations has issued requirements for the testing and certification of hazardous materials packaging. This requirement applies to packaging, IBCs and portable tanks. Standardized packaging must display the symbol, code, letter indicating the packing group, date of manufacture, packaging manufacturer code, maximum capacity test results, country codes and packaging certifying bodies. UN Mark cannot be used for transport in different transport sectors, for example, the packaging of dangerous goods used for sea transport is the responsibility of the Marine Department to certify. But this packaging cannot be used for air transportation. Because the law does not have the authority to certify packaging for air transport.