Custom Aluminum Panels 3D Rhombus Concave Convex Panels for Exterior Facade Cladding Description These custom 3D rhombus concave‑convex aluminum panels are made of high‑strength aluminum alloy with PVDF finish. Three‑dimensional rhombus shape creates striking layered facade effect. Custom size color and structure are available for exterior decorative projects. Features Unique 3D rhombus concave convex structure delivers layered visual impact PVDF surface treatment ensures