We made channel letters from high quality plexiglass materials or when we make a letters for backlight use, they can be made by INOX steel. Whenever we need a graphics apply on letters, we use INTERCOAT PRO 9900 series cut vinyl. Inside lighting is high quality LED lighting in various modules shapes. LED lighting is mostly used today as for their long time lifespan. The power supply we install within our adrvertising on illumination signs are high quality MEANWELL power supplys with 2year warranty.