LED traffic lights are national standard, which means that the signal is to be checked, and the test report is for two years. But even regular traffic light products get the test report, and the cost is no less than 200,000. So, a lot of companies that don't have the capacity to do that are not willing to do it. Of course, some people dare to take risks and photoshopped themselves. Buyer beware, the ministry of public security's inspection report is on record. You can take on test report number, the name of the company to telephone to ask the ministry of public security traffic safety products quality supervision and inspection center, the organization the people inside the author played a lot of them, maybe they don't have the bureaucratic style of work, is very willing to answer other people's problems. This step must not be ignored, otherwise the project is in the acceptance stage, the acceptance people find out that the test report is false, the engineering business is really not worth the loss. Delay the project, please high light car in lamps and lanterns, road, claims etc. Things will get you, but, the one who dare to do business with PS report, you may be looking for him, then he could always change ma3 jia3.

Ask if the company has an export background. Because of export products, the required test report more, and many regional global standard is different, not so to be able to do export business, the first financial strength is no doubt, because literally have a standard, costs may be the domestic several times. Second, foreign testing is more stringent, and it's not something you can get through. Senor jade science and technology, for example, the company basically export share accounted for 80% of the whole company, the company if the product out of the question, in foreign countries, will meet huge claim for compensation, they must be on the product quality is afraid to treat STH lightly.