... radiation, never fade 1-3mm,1-3.5mm Color-Road Marking Ceramic Aggregates:Use:They are for highways, airports, airport ... no radiation, low water absorption, bright color, high-grade appearance, never fade, hard solid, long life and other characteristics.Applied ... high hardness, wear resistance, good performance, slippery body color, rich color, never fade.Shape:For irregular granular appearance Size:1- ...