It is self-adhesive printing, usually a special label. There are also many materials such as PET and PVC, which can be waterproof and sun-proof. Generally, it is enough to print a car sticker 30CM wide. For example, the maximum printing size of our company's self-adhesive trademark printing machine is 28cm, which often prints car stickers, various self-adhesive and special labels. You can ask me if you have any questions ~ ~