1. The excellent and dang things are genuine, but it doesn’t feel like there are many. PS: I am not advertising.
2. You can go to "Xueyun Audio and Video". The products there are all genuine, but I don't know if they sell Twins. Also, Xueyun only sells audio and video products. I don’t know if it sells peripheral products. PS: I am not advertising.
3. There are also some stores on Taobao that sell genuine products. You can look at indicators such as praise rate and credibility before making a judgment. You can also ask Twins fans to help check whether the signatures on some products are genuine, etc.
Once again, I am not advertising, I hope it will be helpful to the original poster.