Tamper evident label materials are special base materials and composite materials used to make labels and trademarks with anti-counterfeiting and anti-tampering functions. They are usually composed of surface materials such as paper and film (PET/PVC/BOPP), along with special adhesives and backing paper. They have irreversible destructive properties or special visual effects (such as holography, leaving a trace after peeling), and are widely used for product traceability and anti-counterfeiting.