... prepainted aluminum for gutter thickness:as your request width:as your request supply any color you want alloy : ... 3105, 3003 1.widely used: Lidao color coated aluminum coil is used ... all of the substrate are from Southwest China Aluminum Industry Co., Ltd and the coating material ... : our production line is from Henkei, Germany.4.alloy:A1100, A1060, A3003, A3004, A3005, A3105, ...