Anti metal tags are electronic tags packaged with a special anti magnetic absorbing material, which technically solves the problem that electronic tags cannot be attached to metal surfaces for use. The product is waterproof, acid resistant, alkali resistant, and collision resistant, and can be used outdoors. Attaching anti metal electronic tags to metal can achieve good reading performance, even farther than reading in air. By adopting a special circuit design, this electronic tag can effectively prevent metal interference with RF signals. The outstanding performance of truly metal resistant electronic tags is that they can read farther when attached to metal than when not attached. This is the excellent result of the overall design.