1. Whether the line used is fake or not can't be just a guess. You should be responsible for your own problems, and understand them first.
2. Check for yourself. The regular national standard line has clear words on the line and different lines: copper wire should be shiny, the overall thickness is relatively thick, the external glue is elastic and the feel is very strong.
3. Contrast method. You can buy back the yuan line at any time when you go, and you will understand when you bring it back. The way is to look at the national standard line and let the seller take a small part for himself, and then you can take the small part away without spending money. )
Enjoy it.