Anti-metal tags are suitable for American and European requirements, with low loss characteristics. The thickness of the isolation material is 0.2~5.0mm, and the reading distance is 0.8 meters to 10.2 meters according to the model. This anti-metal tag is a powerful tool for the automatic inventory system, which can be effectively applied to the automatic reading of metal objects, liquid PET bottles/plastic bottles, aluminum foil packaging, cans, cartons, glass bottles, etc.