Printing principle:

① Is the finished product size correct? If it can be printed in its original form, it should be printed as accurately as possible.

② The placement of layout elements should be correct, and elements should be arranged according to people's viewing habits and ways as much as possible.

③ The text on the layout should be checked repeatedly to prevent the occurrence of typos.

④ Various elements on the layout will have different colors, so it is necessary to check whether the color matching is coordinated, and during printing, trademarks and other distinctive prints may be printed, so the colors of these logos should also be coordinated.

⑤ The outline of the layout should also be coordinated.