1, Aluminum profile for channel letter. 2, No need extra trim cap cover. 3, No color-fading, no paint-shedding 4, Easy glued. We are manufacturer of channel letter aluminum profile, aluminum coil, aluminum trim cap.Our aluminum channel letter coil are sorted to 2 types:1, Special triangle or flat block design channel letter coil. (Extrude strips).We call it " special" because of the ( triangle or ...