Standard:according to GB/T17748-1999 standard Aluminum composite panel:PE or PVDF coating, long use life,various colors ... available,wide application(1220,1250mm)2mm,3mm,4mm,5mm,6mmAluminum composite panel:1.Material:a.Front: aluminum panel with PVDF coatedb ... has been widely used in the office buildings,banks,hotels,train stations,airports,outside and so on.