what is traffic sign materials

traffic sign materials have Economy Grade(5200,5300,5400)Engineer Grade(5500,5510)Engineer Grade premium(5700,5710)High Intensity Grade(5800,5810)High Intensity Prismatic Grade(5900,5910).There are weatherproof, self-adhensive retroreflective films with an excellent corrosion and solvent resistance. Product approval CE. Mostly the Cover liner is PE-coated silicone paper, PVC Film. But(5800.5810.5900,5910)is polypropylene film, silicone coated. The printing method are Inkjet printing with solvent based inks, UV-or latex inks and screen printing. Reflective coefficient is affected by Observation Angel and Entrance Angle.