Double-sided printing labels are increasingly widely used, especially cosmetics and health product labels. The label is affixed to the back of the transparent bottle, and the first layer of pattern is seen through the transparent liquid, which greatly enhances the visual impact, and the second layer of the pattern can be seen directly on the back. Brief introduction of main logo products and company contact methods, etc. The process is to first print the first layer of the pattern on the surface of the transparent adhesive material, then compound it with the non-transparent white material (usually pp), and then print the second layer of the pattern on the white material. This ultimately produces the effect of positive and negative patterns.