1. Install and debug products for consumers on behalf of consumers;
2. According to the requirements of consumers, carry out technical guidance on the use and other aspects;
3. Guarantee the supply of spare parts for maintenance;
4. Responsible for maintenance services, and provide regular maintenance and regular maintenance;
5. Provide regular telephone return visits;
6. The implementation of the "three guarantees" for the product, that is, repair, replacement, return
7. Handling consumer complaints and telephone complaints and answering consumer enquiries. At the same time, in various ways to collect consumer opinions on product quality, and timely improvement according to the situation.