Features: 1) Six-color printing on one side at a time 2) Seven-color printing on two sides at a time, such as five colors on the front side and two on the back, or four colors on the front side and three on the back 3) The circumference of printing roller is 295mm, it spares materials 4) The ink transfer system is more uniform, reasonable and fast 5) The machine improves lubricating system, which make it extend life and reduce the noise 6) This machine is equipped with automatic infrared baking system (optional)