The full automatic gypsum board production line can produce paper faced gypsum board, and it is light ... gypsum board are calcined gypsum , desulfurized gypsum, Phosphor gypsum and face protective paper and it also containing a certain proportion of water ... , starch, admixture and foaming agent, after the process of mixing, forming, cutting, drying, and size fixing,, the paper faced gypsum board ...