If there is a problem with the product, I will give you a test address and mail the product. If the test is a product problem, I will immediately send you a new toothbrush, please rest assured to buy~
If there is a problem with the product, I will give you a detection address, send the product past, if the detection is a product problem, I will immediately send you a new toothbrush, please feel free to buy
If there is a problem with the product, I will give you a testing address and send the product to you. If it is a problem with the product, I will send you a new toothbrush immediately. Please feel free to buy it~<br>