Huaxing (Ledtech Electronics), Unity Opto Technology, Paraoptoelectronics, Yiguang (Everlight Electronics), Baihong (Bright LED Electronics), Kingbright, Lingsen Precision Industries, Lijite Electronics, Lite-On Technology, HARVATEK, etc. Corey, Hewlett-Packard (HP), Japan Asia, Toyota Synthetic, Niigata Acid, Toshiba, Showa Electric (SDK), Lumileds, Smileds, Genelite, OSRAM, GeLcore, Seoul Semiconductor, Puri, Epivalley, etc.