1, create a user profile on a regular basis from time to time with the use of engineering and product;
2, strict implementation of the state for the product warranty provisions and construction unit signed a warranty agreement;
3, establish and improve after-sales service network, service and meet customer needs. Key projects and customers to establish a year-round resident enterprise service teams permanent professional mobile teams. User received notification, maintenance staff 48 hours to reach the scene, implementation and maintenance services.