Most of the street lights in Qidu Town have been installed for about eight years, and the life of solar street lights is generally about five years. The solar street lights produced by Kaich have been used for eight years before some street lights have problems. Kaichuang Lights The stability and reliability are very good. In addition, after testing thousands of street lamps, it was found that most of the accessories for solar street lamp failures were batteries. After more than eight years of use, only more than 30 LED lamp holders developed and designed by Kaichuang Optoelectronics had problems, and the quality was very good.