... Size: 700x1000mm, 787x1092mm, 889x1194mm and customerized size 3)With good Stiffness Quality different duplex board subs:230g/240g/250g/280g/300g ... /350g/400g/450g/500g quality: AAA grade, AA grade, A grade and B gradeQuality ... folding resistance, good printing ink absorbency and further processed, with reliable and steadily quality. high quality duplex board with grey back