1. Fireproof-Grede A 2. Moisture resistant MGO anti-fire sound insulation board (acoustic board,ceiling) is produced on the Description The main materialIt is produced on the base of fine magnesium oxide board and dealt with drilling on the surface.Processing performanceERON MgO board can stick to, cut down, nailing, gluing, paint, saw, plane, easy to cut by knife, it is extremely convenient to ...