The relief printing machine in this series is suitable for printing picture, character and advertisement directly on the surface of plastic woven bag. It is wide used for printing packing bag of chemicals, chemicals fertilizer, grain, feedstuff, cement, etc. The control part of this machine adapts photoelectricity control, electromagnetic regulating, automatic imprinting on-off device, electronic automatic numerating. The power adapts stepless speed control in order to reach stable operation and wide speed control range. The machine is compact, easy to adjust and operate and maintain.