... natural regular gypsum board -Adopt high-performance surface protection paper Paper Faced Gypsum Board1)FeaturesFireproof,Sound-Absorbing,Heat-insulation,Smokeproof,easy ... 6.Foaming agent 7.Glue and adhesive 8.Water and others 3)Use in inner decorationCeiling system, ... intensity, protective paper make it good performance when bonding with plaster core, and to ensure the plasterboard intensity, and ...