mgo board 1.fireproof,waterproof,light weight 2.1220* ... , wood grain 4.any size and density select mgo board is a light weight, waterproof, fire resistant, and ... ,etc. It's Green-label product. Sinkung mgo board doesn't contain any of asbestos fiber, it provides ... dampnessImpacting strength: 6.8LJ/m2Frost-resistance:25 times circulations later, no delamonations and no chapsNoise reduction:42db(9mm wall ...