Scratch-off Non-adhesive Label, Scratch Card Password Label, Anti-counterfeiting Scratch-and-Win StickerProduct Features:The product adopts a multi-layer structure: The bottom layer is made of coated paper or PET film, printed with confidential information (such as passwords, serial numbers, QR codes, winning information, etc.); The middle layer is a scratch-off silver ink layer, which is screen-printed with professional scratch-off silver ink, featuring an appropriate thickness. It completely covers the underlying information before scratching and is easy to remove without leaving residues after scratching; The top layer can be printed with protective ink or laminated to enhance wear resistance; The bottom part consists of a pressure-sensitive adhesive layer and a backing paper. The scratch-off silver ink has excellent hiding power, completely concealing the underlying information, which remains invisible even under strong light. It has good scratchability, allowing complete removal w…