In the following cases, do not belong to product warranty service regulation.
1）Non-hardware technical issues. Fault or damage caused by use in a non-product-specified working environment.
2）Fault or damage caused by other causes of abnormal use, such as water immersion, transport, fracturing, collision, stain or surface scratch after use.
All people modified to dismantle the machine without permission.
3）Fault or damage caused by force majeure or natural disaster.
4）Products out of the warranty period.