as we have to confirm that the goods are from our company first, many other shops sell it too.
First step: please cut its wire, and take photo with our CHA sticker to confirm
Second step: after confirm goods, there have three ways to do warranty normally:
1. can you send defective back to us? factory require it, and will send you directly at our cost.
2. or you can pay USD5 for shipping cost only, will send you another piece ,
3. or send you replacement next time when you buy goods again.
another situatioin, please show us proof that it is damaged before you receive it.
thanks for understand each other.