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Liu Lei, deputy chief engineer of the street lamp department, analyzed that the reason for this result is that the standards implemented by everyone are different. For example, some products are unqualified, but the brightness is higher than the national standard. Whether such products are qualified or not can be defined. Standard chaos also leads to an increase in maintenance costs. Liu Lei said that the traditional high-pressure sodium lamps are broken, and their maintenance personnel can know which parts are out of the problem in 5 minutes. However, because there is no uniform national standard, the position and size of various parts of LED lights are different, so it is very troublesome to check the problem. There was an extreme incident in the test. The lamp of a certain manufacturer was broken, and the technicians were not well repaired. The technicians said that this was because the product was replaced too fast, and the product was eliminated. Zhao Jianping, vice president of the China Lighting Society, also said, "If the current situation has not changed, LED street lights can not replace the traditional high-pressure sodium lamps."
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