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Common technical support, telephone technical support and on-site service and technical support. Includes two aspects, one is carried out technical maintenance, the second is to communicate on the service. As technology advances, the technical nature of the work to support not exactly the same, such as pre-sales technical support and after-sale technical support in the software field carved, and the high technical requirements for technical support, for a variety of clients face , must be psychologically prepared to encounter a variety of problems, we need to be technically more rapidly than the user, to be updated.