Besides its good performance of tamper-evident, we add an extra function of UV light 'VOID' reflection. It means when we shoot the sticker or material with a UV light before it is torn off, the words 'VOID' will be reflected and shown up. So this sticker, not only it is tamper evident, but also it is anti-fake. We make this void product more diversification, wish it can offer better values to our customer.