Even if we choose the above-mentioned screen line angles in plate making, if the color sequence arrangement is not appropriate, the screen line angles of the printing plates of the two adjacent color groups may still differ by 15 °, and there is still the possibility of color deviation, moire and other defects, which will not achieve a better effect of printing and restoring the original.

Rice paper is also often called "Millennium paper". It originated in Anhui. Rice paper appeared in the Tang Dynasty and passed on from generation to generation. The advantage of rice paper is that it is durable, not brittle and will not fade. It has the characteristics of "tough but moist, smooth but not slippery, white and dense, pure texture, no damage in rubbing and folding, strong ink moistening", and can well become an artistic style paper. Therefore, before calligraphy creation, we should still understand the classification of rice paper, the calligraphy style and the advantages and disadvantages of rice paper, and finally determine whether the calligraphy paper is good for raw or cooked propaganda according to the situation.

Special paper is a kind of paper with special purpose and small output. It is a wide range of special paper, a general term for all kinds of special-purpose paper or art paper. Dealers now collectively refer to embossed paper and other art paper as special paper, mainly to simplify terms and avoid confusion caused by many kinds.

To create a unique style and show personality in packaging design, graphics is a very important means of expression. It plays the role of a salesman and conveys the packaging printed content to consumers through the role of vision. It has a strong visual impact and can attract consumers' attention, resulting in purchase desire.