... (white 90%,strength 2.7MPa) 2)Fireproofing,dampproof,mildewproof,soundproof Ceiling ornament 1) Material: special grade of gypsum (whiteness: >90°, breaking ... , mildew and worm resistant, moisture proof, and sound and heat insulated. It can be processed by nailing, adhering and patching, and ... separate pieceOuter of each package in 3cm air bubble film Ceiling ornament