1. chain-paper feeding 2. Auto cycling ink-feed system, roller lifted and separate rotating. 3. Rocker interval adjustment device avoids central deviation. 4.All the axles of roller must be chorme-plating in oreder to increase the hardness 5.Printing electric phase adjusting mechanism adopt planet type gear structure,(It can be adjusted 360degrees while revolving and stopping ) 6. The machinery units adopt electronic separation and pneumatic locking up. 7. Auto count device to show right production volume and main machine automatically stops