100pcs 12cm Cobalt-based EM Anti-Theft Double Sided Magnetic Strip for Book Security

100pcs 12cm Cobalt-based EM Anti-Theft Double Sided Magnetic Strip for Book Security1. Two-side longer, easily peeled off. (Note:The magnetic strip can be magnetized.) 2. Compatible with all EM systems, such as for 3M, Dialoc, Certus, Checkpoint System, etc. 3. Use environmentally glue, no harm to the paper and human body. 4. Designed to be applied between pages of Books and periodicals 5. The materials of the strip all pass testing, which are safe to human body. Good Concealment, use convenient...