Our Patented Laser Etched Lightguide Plate (LGP) give even illumination across all our products. Dotting the Acrylic with advanced algorithms gives the most even illumination in the industry. Laser etched dots have an advantage over printed dots, or screened dots. Laser etched dots yellow at the same rate as Acrylic, giving long life with high output. Printed Dots, or Screened dots yellow, and even fall off over time.