Magnesium Oxide Board 1.1220*2440*3mm; 2.partition wall,ceiling; 3.fireproof,waterproof,anti-moth; 4.cut,plane easily. Product Name:Fiberglass Magnesium Oxide Roof Board1.Product Properties 1.raw materials: magnesium oxide, magnesium chloride,glass fiber, wood flour,perlite; 2.specification:1220×2440,1220×3000,900×2700,other sizes are viable,the length≤3000 and the width≤ 1300; 3.thickness:3-20mm ...