Materials:1) Front side: aluminum roll coated with PVDF or polyester2) Core: fire-resistant polyethylene or normal polyethylene (PE)3) Rear side: aluminum coated with polyesterSpecifications:1) Panel thickness: a) 4mm (standard)b) 5 - 6mm available upon requests2) Aluminum skin thickness:a) 0.50 x 0.50mmb) 0.40 x 0.40mmc) 0.30 x 0.30mmd) 0.25 x 0.25mme) 0.21 x 0.21mm3) Width: a) 1,220mm (standard)b) Maximum width is 1,600mmc) Other widths available upon request4) Length: a) 2,440mm (standard)b) Up to 6,000mm (recommended)