The reasons are as follows: 1Between the small sample version and the large version, the small version and the large version are different due to some data changes in the production or screening. 2, The printing pressure of the manufacturer in the small version proofing is different, and the difference between the two is too great. 3, The ink hue and density of the two printings are different. 4, The paper used for the two printings is different. For example, when some manufacturers make samples, in order to save costs, they use coated paper to print, but the actual final productIt is to be printed on cardstock. Because there are differences in paper characteristics such as ink absorption and paper color, the printed products are definitely different.