... colorful, rich layers, and good fastness It can be used on all kinds of offset machine.With the ink, ... offset ink is used for gas shading, the printing ratio should not be printed by ordinary plate-making.7. ( ... % magenta and 35%-40% yellow. If print green PS-plate, the proportion is 80% cyan and 90% yellow. ( ... 2)If print Asian-yellow PS-plate, the proportion is 10-12% magenta and 7-8% ...