What are the specifications that should be considered when purchasing aluminum sheets?

When purchasing aluminum sheets, consider the following specifications: 1) Alloy type, which determines properties like strength and corrosion resistance; 2) Thickness, measured in millimeters, affecting the sheet's durability and application; 3) Width and length, which should match your project requirements; 4) Surface finish, such as mill finish, anodized, or painted, which impacts aesthetics and protection; 5) Temper, indicating the hardness and formability of the sheet; 6) Certifications, ensuring the sheet meets industry standards; 7) Supplier reputation and customer reviews for quality assurance. These factors will help you select the right aluminum sheet for your specific needs.