Water transfer printing is a technology that uses the pressure of water and activators to cause the film layer on the water transfer printing substrate to peel off. Then, after the peeled-off film is obtained, the water transfer printing process uses the pressure of water to cover the graphics and patterns on the film onto the surface of the object, thereby achieving the transfer of graphics. From this, it can be seen that the key to water transfer printing lies in the water transfer printing substrate. We usually refer to this water transfer printing substrate as water transfer printing paper or water transfer printing film.

The emergence of water transfer printing paper can be regarded as a significant advancement in printing technology. Because many products are difficult to be directly printed on, with this medium, people can first print graphics and text on a more easily printable substrate using mature printing techniques, and then transfer the graphics and text to the substrate. The term "water coating transfer printing" refers to decorating the entire surface of an object, covering the original appearance of the workpiece, and being able to print patterns on the entire surface (three-dimensional) of the object. This is its advantage; however, the disadvantages are also obvious, that is, when the flexible graphic carrier comes into contact with the substrate completely, stretching and deformation are inevitable, so the graphics transferred to the object surface are difficult to achieve a realistic effect. Water mark transfer printing is a process that transfers the graphics on the transfer paper completely to the surface of the substrate. It is similar to the heat transfer printing process, except that the transfer pressure relies on water pressure. It is a recently popular water transfer printing processing technology that can transfer graphic information in small areas on the substrate surface. It has a similar printing effect to the pad printing process, but has lower investment costs and a simpler operation process, and is very popular among users. The water mark transfer printing process does not require an activator to activate, eliminating the pollution of organic solvents. It has obvious advantages in the production of handicrafts and decorations.

Water transfer printing processing is a technology that can transfer various images and patterns onto various products such as ceramics, glass, fabrics, metals, wood, plastics, and crystals. For example, using water transfer printing technology, one's own or a friend's photo images can be transferred onto items like cups, CDs, mobile phones, T-shirts, etc. Due to its characteristics of low production cost and suitability for a wide range of products, it is very suitable for mass entrepreneurs with limited funds.