... 4.Past ISO9001-2008,FSC,SGS,SDS test Grey paper board,grey chipboard1.top grade wood pulp/recycle pulp2.good stiffness3 ... ,FSC,SGS,SDS test More details:1) Can be made in sheet or in roll . (Grammage above 300gsm and under 650gsm can be ... , kraft paper and many other kinds of paper .E.Grey board color black , white,black and any other colorF.Coated Duplex ...