Qihan guarantees that we will offer product maintenance for free from the date of purchasethrough the warranty period.
The necessary conditions in the warranty for free service include
a. The product is used normally and faults are not caused by human error since date of purchase and are under the warranty period.
b. Non-human error faults that are not caused by unauthorized disassembly and non-official-guided refit and extra installation.
c. The series number, factory label, and other marks are not damaged in any way.
d. User must provide effective proof of purchase, order receipt, and order number.