... (OEM). 2.Duplex boards,Multi color Printing. 3.Recyclable Material. 4.3 to 7 plys. Product Feature:1) Printing: ... 100G, 120G, 150G, 200G, 250G, 300G)Corrugated paper( A, B, C , E grade )Color1-4C or morePantone colorPrintingoffset printing, silk ... cartonsQuality ControlFrom material purchase, pre-production machine testing, 3 times assessment for finished goods, packing etcSample chargeSample charge ...