cardboard paper used for gypsum board

We can offer all kinds of specification of cardboard paper which used to make gypsum board . It is especially use as surface of gypsum board Usually the face paper and back paper are not the same weight for the common type. There will be 20g different. And the color is also different. But if you require the same weight, also we can offer to you. The common paper technical data IndexUnitStandardGrammageg/m2190±5,180±5(Cobb)Obverseg/m2≤35Inverse≤80Moisture %11 14PorosityS50 110StrengthMDNup paper≥140down paper≥160CDUp paper ≥63Down paper≥50