I have a number of professional services, equipment maintenance team. For power companies and enterprises to provide long-term maintenance of equipment maintenance services. 1, 2 DC-screen transformation, the DC power supply cabinet to maintain the maintenance 3, DC to provide professional services, equipment repair 4, charging devices (high-frequency power modules and phased rectifier) of the Emergency 5, the battery inspection, maintenance and replacement. 6, battery capacity test. 7, DC power equipment repair and replacement of components. 7, custom DC power, control, signal acquisition devices. 8, the DC related to the provision of free technical advisory services. Reliable technology; satisfied with the service.