Hello, I have explained to you the question you raised. This batch of goods is the same stock as the one you ordered before, there may be some electroplating thickness. Our production manager and engineer have also discussed it and believe that it can be used normally and there is no functional problem. Even if it is returned and re-sent, there may be the same problem as you think, because this batch of goods are the same, including the goods of the previous order. We will try to improve upon your feedback. Thank you.