Self-adhesive is the process of transferring ink and other substances through the printing plate to the surface of the printing material with an adhesive layer pre-coated on the back under a certain pressure. Self-adhesive has the following characteristics: small investment and quick results. Self-adhesive printed matter is mostly trademarks and stickers, with smaller format, fast printing speed and less production waste. Flexible printing methods. Self-adhesive stickers are not restricted by printing methods. Traditional printing factories can use offset printing machines or screen printing machines for printing. With many functions, self-adhesive stickers are widely used in food, cosmetics and barcodes. They can also be used as signs for electronic products, mechanical products and other special environments. Paper self-adhesive labels are mainly used for liquid detergent products and popular personal care products; film materials are mainly used for mid-to-high-end daily chemical products. At present, popular personal care products and household liquid washing products account for a large proportion on the market, so the corresponding paper materials are used more.