For color and color matching drafts produced by cardboard printing companies. Not only does it have rich light and light changes, but it also has rich self color tone changes. The appropriate way to present and enrich changes in replication is through offset printing brush companies. Relatively speaking, there are not as many changes on the offset printing plate, only the difference of blank space in the text on the plate. The height of the ink layer on the printing plate is the same, and it is also not possible to creatively follow the original data - one tone is equipped with a variety of color tones.

In this way, the reproduction of color graphics in printing companies is obtained based on special art. The steps of a planographic offset printing company are to present and restore the color tone of the original material. When working in a printing company, different plates are printed in batches on the same page according to various color tones, presenting rich colors and diverse effects.