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With customized double layer labels, once the top layer is peeled away, an important message is released underneath the top label and will appear on the bottom layer. These custom dual layer stickers have two layers of stickers, one on top of the other. The top layer is removable type, whereas the bottom layer is permanent type. The hidden message will appear on the bottom layer as the top layer is peeled away. Double layer labels are used for school and university surveys, transportation systems and promotional advertising and coupons. These are used on chemical cans for directions to use and instructions.
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