Hunan Yuan Sheng is located in Changsha, Hunan Province; The Company is a research, development, manufacturing and sales of aviation obstruction lighting. We pull together to do an in-depth research on the development of the very products, hoping to grasp the state-of-the-art technology in this area and to fully satisfy the market demand. We offer a variety of alternatives, such as low intensity single obstruction light, double obstruction light, meduim intensity obstruction light, obstruction control box and solar obstruction light..