Aluminium Composite Panel is kind of sandwich panel made from non-toxic low density polyethylene (LDPE) core or ... : Coating: PVDF or nanometer paintFire rate: B2, B1, A2 classSpecification: Panel Thickness: 2mm-6mm, recommend 4mm,5mm,6mmPanel width: 1000mm-2000mm ... finished, Chameleon, anti-scratch, Nanometer self-cleaning, special design. aluminum composite panel