Stop high risk signs 1)made with aluminum plate and reflective sheet. 2)applied to the traffic 3)UV-protected ink Stop high risk signs features:1) Material : alminum plate2) Size: available to customer order3) Thickness: 0.5mm, 1mm,2 mm, 3mm4) Opional: customized words can be printed on the sign freely5) Waterproof ,UV-protect. Stop high risk signs