... copper sheet, central aluminum honeycomb core and back aluminum sheet. Work shop:Product Characteristics:1. Low density, high intensity, high rigidity, stable ... discussed with customers)thickness: 6mm, 10mm, 15mm, 20mm, 25mm (1mm for skin sheet)Color: As per customer's requirementApplication:Bulilding curtain ... before shipment)Lead time:30 days Copper honeycomb sandwich panel for cladding/facade etc