we are large manufacture and have SZ office also .we offer Led light bar ..Light stand ,flash light , 8 years light designing for LED lights,Especially for locomotive headlight, spotlight offroad, and many other long distance illuminated lights, we got many patents in long distance lamps field.favorable price in this line so our company export s the goods to all of the world such as Europe , Korea ,USA, and so on so i hope if you see this you can contact