... 90%,strength 2.7MPa) 2)Fireproofing,dampproof,mildewproof,soundproof, Ceiling Medallion Features: 1) Fireproofing, dampproof ,mildewproof, mothproofing, soundproof, high strength, easy ... room.6)Our export packing usually the air film bubble, plastic bag, hot shrink and pallet---.7) You can saw,dig ...