Maintenance: 1. Router: CISCO (Cisco) series, F5, Redback, Juniper, H3C, Huawei, and other high-end routers. 2. Switches: CISCO Cisco, 3COM, H3C, and other high-end brands. 3. Firewall: CISCO Cisco, Huawei, H3C, F5, Netscreen, Juniper, etc. 4. Power: F5 power, Juniper power, Redback power, CISCO (Cisco) equipment supply, power supply, etc. Huawei equipment sizes power maintenance. 5. Wireless devices: PROXIM, AVAVY, LUCENT, CISCO, INTERL, D-Link and other wireless AP, bridge, cards. 6. A variety of high-end routers, switches, wireless bridge, hubs, engine module. 7. and provides networking products through insurance companies paid renewal services.