Nano PVDF Coating Aluminum Composite Materials good for Building exterior cladding & curtain wall projects: PVDF Nano coated ACP for outside use, excellent weatherproof and self-cleaning function. Recommend to use panel thickness 4mm or 5mm, Aluminum skin thickness 0.30mm or 0.40mm or 0.50mm. See below for PVDF ACP Nano Self Cleaning Aluminum Composite Panel's description.