Company profile Han industrial group limited is an integrated high-tech enterprise with solar and led technology. Xi¡¯ an greenwood new energy technology co., ltd. Is the subsidiary of han industrial group limited. We are specialized in the research, development and manufacture of led lights, solar lights and solar generating systems and so on. Our products are widely applied to lighting, sea navigation, solar road stud , solar warning light , coal mine, gas station and other professional industrial fields. Specifications : E drivers more than a thirty-second reaction window compared with about 3 seconds for conventional reflective devices. The intense brightness of the leds makes them easily visible at distances of about 900m under favourable conditions.