... (PVDF ). Built in composite aluminum honeycomb. Fire prevention high frequency acoustic plate side 1. Roll the ceiling color, the ... Strong pressure to bear both the deformation of high winds, but also free cutting, slitting, punching, slotting, drilling, bending ... moisture-proof anti-deformation.2 Fire Safety3 green4 High sound insulation5 energy-saving insulationspecification600*600*25mm 600* ...