PS polystyrene light guide plate is a kind of high-tech product that takes advantage of light effects, such as refraction, reflection and diffuse reflection, formed by side light source between lines or dots and turns spot light source or line light source into plane light source.  The optical efficiency and uniformity is better than conventional PS light guide plate.  Polystyrene sheet light guide plate can be cut or engraved and then used directly, without process of silk printing or laser dotting. Thin polystyrene sheets applies to all types of LED edge lights including LED round and panel lights.