gypsum board substitute for partition 1) Fireproof:A1-Grade 2) Waterproof 3) Light weight, ... high intensity 4) Ceiling,partitio gypsum board substitute for partition MGO board (also called magnesium oxide board, fireproof board) ... / tapered5) Color: white / grey Customized size can be accepted.Applications: Partition wall, interior and exterior wall, ceilings, fireproof door, wall linings ...