Signage panels Get ISO9001:2000, IS014001:2004 certificate of CE, SGS Good ... cases MaterialFront side: aluminum-alloy sheet coated with flour-carbon resin (PVDF) OR PE roasting painting,Core: nontoxic polyethyleneBack side: aluminum ... -alloy sheet coated with polyester resin painting Surface finish: treated with PVDF OR PE resin rolling roasting coating FeaturesLight, even, convenient ...