1000 series aluminum plate has high purity of more than 99% and it is widely used in industry 3000 series aluminum plate has good anti-rust property and is commonly used in the humid environment of air conditioning, refrigerator and car bottom 5000 series products’ main characteristics are low density, high tensile strength and high elongation 6000 series belongs to Al-Si-Mg alloy, so it has the advantages of 4000 series and 5000 series