With the appearance of private decoration, more and more need to have a variety of colors and patterns of building materials, such as the personalized pattern input computer scan printed on the substrate (advertising light box, all kinds of signs, etc.); Especially in Europe and the United States, outdoor advertising light boxes are made of aluminum plate, and the required text and text are printed by inkjet printer, the ink is generally used in light curing (UV) ink, which requires a strong interlayer adhesion between ink and primer, coloring force; The special polyester coating for advertising board developed by our company (commonly known as printing white) is formulated by special modified polyester according to the principle of similarity and compatibility. After continuous use by customers, the adhesion and printing color saturation can fully meet the requirements.