As to the machine, single-color, two-color, three-color, four-color ... wheel prevents printing ink from drying up while the machine is paused.Electronic counter is equipped and can ... Paper trimming and scoring device is optional.As to the machine, single-color, two-color, three-color, and four-color ... 2578221002500x190070005.5PS23-2578223002500x210075005.5 Corrugated Three-color printing press machine