... perlite board, MGO foam board fireproof door core spec Thickness: 25mm, 36mm, 48mm, 50mm Size: 915mm*2150mm MGO perlite boardMGO foam ... 1) Light weight, fire retardant and self-extinguishing, thermal insulation, soundproof and sound absorption, mould proofing, damp proof, ... substitution of wood.Applications: 1) Advertising field: sign board, billboard, exhibition display, silk screen printing, laser ...