1. It will be difficult to provide effective warranty service if you can not provide a correct serial number;
2. The whole machine and components exceed the warranty period;
3. Equipment failure or damage caused by unauthorized modification of the equipment (private modification includes:
a) modification of the nozzle assembly;
b) modification of the machine structure;
c) use of third-party components;
d) use of third-party firmware procedures or change the original Factory firmware program, etc.);
4. Equipment failure or damage due to incorrect installation and use;
5. Equipment failure or damage caused by use in a non recommended working environment specified by this manual
(Unstable, dusty, moisture);
6. Equipment failure or damage due to improper use (beyond workload, etc.) or maintenance;
7. Equipment failure or damage due to the use of other branded components or other inferior consumables.
8.No warranty for Product Gifts（TF card, USB cable, wrench, spatula, pliers, etc）
9.Giveaway prizes or Free product promotions cannot be refunded , and we do not provide a warranty for free products.