AutoPlate's unique Hi-Gloss Poly (polyethylene) is virtually indestructible and will not yellow like polystyrene plastic. .075" and .055" Poly are for permanent use where a front state license plate is not required. .035" and .023" Poly are primarily for temporary dealer use in any state. .035" Poly is heavy enough for extended use when cost is the primary factor. .024" Poly Coated Card is for use as a temporary dealer registration plate where mandated by law such as in Georgia. .024" non-embossed aluminum is for permanent use when a metal plate is preferred. All plates are white and can be full bleed printed, except for the aluminum, at no extra charge. Aluminum plates are available in white or natural aluminum. UV ink is screen printed for maximum gloss and durability.