①Multi-layer bottom paper label sticker. Special material, there are multiple layers of bottom paper under the surface material, and the back of the first layer of bottom paper is glued with the second layer of bottom paper as a whole. When the face material is die-cut after printing, it is cut through together with the first bottom paper and discharged together. When the label is applied, the face material and the first bottom paper are peeled off and attached to the product. When necessary, peel off the label again (leave the first layer of backing paper) and attach it to the relevant article.
②Multi-layer coated paper labels. It is a material processed by secondary coating.