Chang Yao Limited is one of the top manufacturers and worldwide suppliers of automotive halogen bulbs, Xenon HID lamps, and LED lamps (household, automotive miniature bulbs), under its registered brand, CT, for over 40 years now, since its foundation in 1979. We have managed to keep the highest standard of quality since we started manufacturing auto bulbs and led bulb, under the quality system of ISO 9001: 2008(CNS 12681). Especially, for the automotive halogen bulbs, we have “DOT” approved by U.S., and ”E4“ approved by Nederland. Chang Yao Limited has been growing, with the passion of developing innovative lighting products for safer driving. As reflected in our company motto, we pursue the sharing of values with our customers as well as mutual prosperity through honesty, creativity, social volunteering, and pursuit of the public interests.
We've been supplying our products to the different the world-class auto part OEMs lamp makers.