1. If performance failure occurs within 7 days, the machine can be returned, replaced and repaired.
2. If the machine fails in performance within the 8th day to the 5th day/kloc-0, it can be replaced or repaired.
3. If the machine is purchased for more than 15 days within one year, the whole machine is guaranteed for one year.
4. If there is no purchase invoice, it can be guaranteed for 15 months according to the factory date.