1.basic weight: 250gsm to 450gsm 2.size:787*1092mm or 889*1194mm,850x1168mm,880x1230mm 3.the MOQ is 20Metric tons. the specification of duplex paperboard:1) Product range: 230-450gsm in different quality grade2) Size: Sheets and reels both are available, 850x1,168mm , 880x1230mm, 787 x 1, 092mm, 889 x 1, 194mm and any special sizes available;3) Features: Standard weight, high-standard stiffness, ...