Service objectives: Let customers feel five-star service.

Service committed to：
（1）Services within the warranty period.
        1. 18 months free warranty
        2.Quick response within 1 hour, solve the problem within 72 hours.
        3. Call back to the device every three months to track user usage.
        4. Free maintenance and repair of the equipment every half a year, and archive the equipment information.

 （2）payable service;