The common road has the intersection, the t-intersection, the traffic signal light divides into the horizontal installment and the vertical installment, as well as the aluminum shell and the plastic shell, according to the different customer demand, two kinds of installment methods may, as the specialized production factory, we can help you according to your road situation to provide feasible suggestions, and produce reliable quality products Aging test Each group of lights should be through at least 48 hours of aging test, to ensure that the factory is a good test, quality assurance