Logistics Security bag is also known as express security bag, the use of imported high-viscosity adhesive, bag mouth once bonded is not easy to open, need to tear the bag mouth can be taken out of the goods, so it is also known as damage bag. Express security bags are selected by multinational express and postal companies as the ideal reliable transport carrier, used to securely seal customers' confidential documents, cash and valuables, any illegal opening will lead to the disclosure of hidden security information.