Material: 30mm aluminum screen thickness, wall thickness of 1.0mm using the national standard A aluminum (6063-T5), surface polishing treatment, not drawing, not easy to fade and change color. The structure is simple, with square columns and connecting fastener connection, convenient assembly. The unique side structure (extratensive adduction, 35mm 42mm), the appearance of the atmosphere, and the top edge of the screen. The unique available color cuttings or cutting aluminum decoration, the screen inside the honeycomb paper structure, sound absorption, and environmental protection.