... 0.4-4.0 mm grey board, 2, Standard size is 787x1092mm and 889x1194mm Grey board,grey chipboard,grey paperboard 1, Weight ... and size 220gsm-1800gsm is once forming board(1850gsm or more can be laminated) 2, Thickness standard: 100g ... .163mm 3,Feature: Competitive price,good quality,high stiffness,good folding strength. 4,Samples Samples is free and can be sent ...