1220*2440*4*0.5mm BUILDING MATERIAL ALUMINUM COMPOSITE PANEL 1)STANDARD: According to GB/T 17748-2008standard Production capacity :45000 Square Meters Per Day for aluminum composite panel 2)ALUMINUM COMPOSITE PANEL STRUCTURE 3) DIMENSIONS:A)Panel Thickness: 2mm 3mm, 4mm 5mm 6mm 7mm 8mm B) Alumin......