This product is a spherical powder of silicone resin with an average particle size of 2 microns and a refractive index of 1.43. It has excellent dispersibility and good lubricity. The heat resistance is much higher than that of the general acrylic micropowder, and it does not turn yellow even if the PC material ages. Since the refractive index of the silicone resin fine powder is relatively low, it is more efficient in improving light diffusion.