The water sticker is a blue backing paper, which is easy to identify. Xiayahong Zhagu 2.0 has no water stickers. The pad sticker is transparent with a piece of white tissue paper on it. The use method of the pad paste is to cut it open and put it in the position to be pasted. It is convenient to scrape the surface with nails, but pay attention to the front and back. In addition, if you encounter a very easy-to-drop adhesive, it goes without saying that you can take it off and paste it directly.