... price Detailed Product Description 1)Fire-proof paper face Gypsum plasterboard Thickness: 7mm,7.5mm,8.5mm, 9mm,9.5mm, ... using in the places where require strong fireproof, such as ceilings, potions, elevators, stairs, corridors or for fireproof of the appearance ... , schools, factory buildings, etc 5)Water-proof paper face Gypsum plasterboard(in blue color gypsumboard) is a kind of lightweight board ...