Features: 1) 4mm aluminum composite panel for exterior decoration, aluminum plastic composite panel 2) Total thickness: 4mm, construction material, PVDF paint or fluorocarbon color coating with weather protection characteristics 3) Suitable to use as wall curtain for high-rise buildings 4) Two skins of aluminum with thickness ranging from 0.4 to 0.5mm 5) Polyethylene or non-combustible mineral filled core, manufactured according to the GB17748-1999 6) Fireproof series complies with GB 8624 grade B1, BS 476 part 6 and 7 7) Other specifications available on requests 8) Weight: 18kg 9) Product dimensions: 1,220 x 2,440mm Outer packing: 500pcs bundled by iron tape with wooden base