Poor quality products
I agree with the previous comments: too much noise, poor quality products, indeed the conductive copper plate is so thin that it can be deformed with the finger without too much force....
I'm not sure what to do about it, but I'm sure it's a good idea to use it.
I'm not sure if it's a good idea to use the kit for the first time, but I'm sure it's a good idea to use it for the second time. (especially for pc assembly ...)
The quality and service is not good enough.