What is four-color flat net? Four-color flat net is the color is very light, the dot is basically less than 50%; The four-color flat net is to use black (K), red (M), blue (green C), yellow (Y) about 50% and the light color of the dot hit out, the flat net is very difficult to print, easy to get bars, and the color difference is seriously not controlled. Generally the most test of the printing...