aluminum honeycomb panel for exterior wall Light weight High strength Excellent flatness Water resistance aluminum honeycomb panel for exterior wallThe structure:Front skin+glue/ adhesive film +core+ glue ... .5mm,0.6mm,0.8mm,1.0mm.Material of core: aluminium honeycomb core ,paper core.Standard thickness: 12mm,15mm,18mm,20mm,30mm,40mm,50mm ...