The equipment adopts a hard-compression-soft, up-and-down stratified printing structure, which is consistent with the international mainstream double-sided printing press technology (front negative and back printing). It not only solves the disadvantages of high paper reversal and double squeezing, but also solves the defects of large dot distortion and color difference between the front and back of the traditional double-sided printing machine. With the advantages of good quality, high work efficiency, small footprint, smooth operation, low noise, low energy consumption, good dot reducibility, uniform ink, accurate overlay, and easy maintenance, it is a key equipment for the double-sided printing industry. The aircraft fills the gap in China and is of great significance to improving the level of double-sided printing technology in China, improving the core competitiveness of printing companies, and promoting the development of the industry.