Material: Aluminum alloy 3 series, 6 series, etc. Process: Cutting, stamping, turning, milling, drilling, grinding, Packing Surface Treatment: Sand blasting, Zinc/chrome plating, Powder coating, Polishing, electrophoresis, anodizing, etc.. Points: Aluminum is softer than other metals, so we should prevent injury, crushed, scratches and deformation when do stamping, and specially clearn, including die, punch table, assembly line and packaging materials.