China Shanghai Container Seals Company is the leader manufacturing and trading container seals in Chinese mainland, having nearly a decade of history in security seals' industry.  Our company has a strong team of experienced designers and production technicians, having successfully developed 6 series of security seals. We carry out our work strictly according to the requirements of national GB228-87 standard and our bolt seals comply to ISO/PAS17712-2003 requirements, our container seal also gained the certificate of US customs' approval. By far, our company has established a long , stable business relationship with dozens of worldwide famous lines and domestic shipping companies thanks to the high quality and better prices of our products.