Network troubleshooting service refers to on-site troubleshooting of problems caused by the use of systems, applications, networks, etc. If the problem is solved or the user has been helped to avoid software defects and can be used normally, the on-site service fee and maintenance and commissioning fee will be charged. Otherwise there is no charge. Including: software installation and debugging, system installation and recovery, killing various viruses and Trojans. Solve various computer soft faults and network faults.