... made up of three layers, with two layers of aluminum skin on the top and bottom, and one layer of anti-toxic ... polyethylene material in the middle. Also, both of skin surfaces need to be coil-coated with special paint material ... temperature condition. Specifications:Alloy: A1100-H18, A3003-H24, and so on.Maximum width: 1,000mm to 1,570mmAvailable length: 6,000mmPanel ...