Chimei Corporation successfully manufactures Optical PMMA Sheet using the direct extrusion method without granulation and using methyl methacrylate (MMA) as the main raw material using three decades of acrylic sheet manufacturing experiences and the introduction of the continuous process technology from the United States. It has good weather resistance, high heat resistance, high transparency and gloss, as well as stable physical, chemical, optical, and electrical properties. It can be widely applied for backlight Light Guide Plate(LGP), scanners, lighting advertisement, etc.