2. Product maintenance: provide customers with product maintenance services, including product troubleshooting, repair and maintenance.
3. System integration: provide customers with system integration services, including upgrading and expanding customers' existing systems and integrating products with customers' existing systems.
4. Technical training: provide technical training services for products to help customers improve their technical level and efficiency in using products.
5. Remote support: provide customers with remote technical support services by telephone, e-mail and remote login. , and solve the problems that customers encounter in the process of using the product.
6. On-site service: provide on-site technical support and services to customers according to their needs and actual conditions.