Prepainted 3003 aluminum coil roll with aluminum-magnesium-manganese alloy products are a cost-effective roofing and exterior wall material. Aluminum-magnesium-manganese alloy has been widely used in the construction industry, and has played an important role in the development of modern buildings in the direction of comfort, lightness, durability, economy, and environmental protection. AA3003 magnesium aluminum alloy (AlMg1Mn1) is generally recognized as a roofing …