Tamper evident seal is used for security bags. They are classified into Gold Level 4 and Silver Level 3. The sealing is tight, it will leave marks at the bag seal and display the word "STOP" once the sealing is tore open. They have been obtained the anti-counterfeiting standards and certifications that recognized by the International Civil Aviation Organization (ICAO), the European Central Bank (CachEDI), and the Federal Reserve Bank of the United States (FedCash), providing unique patented technologies and more secure anti-counterfeiting packaging for domestic and foreign customers.