... 700x1000mm, 787x1092mm, 889x1194mm and customerized size 3)With good Stiffness Quality different duplex board subs:230g/240g/250g/280g/300g/350g ... used and supplied in printing and packaging of wine, food, toy, drug, appliance filed and others.Advantage: strong stiffness and ... printing ink absorbency and further processed, with reliable and steadily quality. high quality duplex board with grey back