The maintenance support center is equipped with communication equipment, notebook computers and necessary tooling and instruments. The center's technical support engineers can arrive at the site in a short period of time to serve users. At the same time, the support center has set up a spare parts warehouse, which can provide spare parts services at any time at the request of users or the actual needs of equipment maintenance. In emergency on-site maintenance services, we will organize a technical expert group to provide paid on-site services based on on-site needs.