Advantage of single-layer aluminium panels: 1.Hydrochloric acid resistance;nitric acid resistance,colour changes<=NBS; 2.Resistance to natural weathering,no colour changes<=5NBS; 3.Corrosion resistant,anti-humidity,anti-mist for above 4000 hours(abouve grade2 of GB1740); 4.Wear-resistant,pencil hardness>=1H; 5.Earthquake proof; 6.Self cleaning effect,natural-cleaning after the rain; 7.Resistant to cleaning agent,no changes after soaking in for 72 hours; 8.Different shape and deluxe designs,visually pleasing linear designs; 9.Durable and recyclable; 10.Fireproof; 11.Green and environmental-friendly; 12.Light weight,minimize load on building structures; 13.Can be installed horizontally and vertically depending on requirement.