... brand of high-speed 4/6/8 colors offset printer, for example HEIDELBERG,ROLAND, KBA, MITSUBISHI, LITHRONE etc.2. ... good surface smoothness, stable ink absorbability, low surface roughness and rich printing dots, makes excellent printing result.3.Good surface ... .4.Outstanding paper stiffness is a strong support for carton laminating and die-cutting. Duplex Board Paperboard for printing and packing