Printing efficiency has always been one of the major gaps between domestic offset printing equipment and imported offset printing equipment. At present, domestic offset printing equipment has made breakthroughs in this respect. For example, Jiangsu Changsheng will launch the first tandem-type double-sided eight-color offset press, which will fill the blank of double-sided multi-color printing presses in China, so that the efficiency of multi-color printing reaches a new level.