The characteristics of offset printing and flexo printing are different, and the pattern design of the offset printing color box is also different. To convert offset printing to flexo printing, in addition to the four basic colors, one or two spot colors are often used. Therefore, most customers have six sets. If the light function is added (the structure is the same as the printing unit), there are seven sets of printing units. Although the servo drive does not limit the number of color groups, in general, customers can match 6+1 to meet their needs, so we currently match up to eight colors.