The high security seal is made of ps transparent plastic as the sealing shell. The inside of the lock body adopts a clamp spring structure, and the outside is filled with ABS. It is mainly used for the sealing of containers, container trucks, vans, etc. The surface of Ouyue's bolt seal blocking body supports customized laser typing, logos, codes, barcodes, letters, colors, etc, and a variety of sizes and diameters are available. Now the factory has a large stock in stock, which can be shipped quickly. Our high security seals have passed ISO17712, CTPAT certificate and have been exported to more than 50 countries and regions, like South America, the United States, Canada, France, the United Arab Emirates, South Africa, etc. If you are looking for high security disposable tamper-proof bolt seals, contact us get the best price with the biggest discount!