... prepainted aluminum for gutter thickness:as your request width:as your request supply any color you want alloy :3105 ... the roller shutter, the honeycomb, the truck for transportation, the can material and so on.2. ... of fluoro resin is more than 70% for the PVDF coating m3.pre-treatment: our production ... line is from Henkei, Germany.4.alloy:A1100, A1060, A3003, A3004, A3005, A3105, ...