With compact structure, stable running, easy operation, the machine can be overprinting. Also it can print with one colour unit only. Each colour unit adopt structure of 3 forme ink rollers and 2 forme dampening rollers with balance ink & water, clear dot. Dampening, inking and plate pressure are controlled by pneumatic device with easy operation and stable feature. Multi-colour machine all cylinders sheet transfer device is used for sheet transfer with stable sheet and precise registeration. The machine has devices of non-stop motor skew pull plate, axial inch adjuster for plate cylinder with quick adjusting plat Use touch screen as operation displayer. Use PLC control system for electric devices.