... min.life is 50,000-100,000 hours.7) High Intensity: Acid resistant,waterproof,anti-exposive and anti-shock8) Exquisiteness ... City Signs: Expressway, State Highway, Building Outline, Square Ground Light Project3) Business Ad: Company Logo, Building Mark, Doorplate ... steel ,Backboard: 0.8mm galvanized sheet ,3 LED waterproof light, Thickness: 4cmHBM-5galvanized + acrylic letterSurface: 3mm acrylic,Frame: ...