What does moving Davy synthesis mean?

Mobile maintenance company means that the mobile company employs some third-party companies to complete some work, such as agent maintenance network, which is also divided into many aspects, such as base station maintenance, repeater maintenance, computer room maintenance, transmission maintenance, optical cable line maintenance and so on.

David? According to the requirements of mobile, the company should patrol on time, send patrol reports and troubleshoot. According to the maintenance content, the mobile company will pay a part of the maintenance fee to David company every month. If the equipment maintenance network fails, it can investigate where the failure is and troubleshoot it.