I was being sarcastic,That right there is enough for me to shell out for a Highly Educated one and deal with it. At least flat coils are relatively cheap through some DHGate vendors; those I can be cheap on and buy a couple at at time (to a point).
I own the vapes I mentioned, but to me there are very few materials out there that I consider unsafe.
I never found out what made grade 2 superior over the other 3 pure grades.
I'll say that if you have the money, and want peace of mind, by all means buy American, no doubt their QA is better than a lot of the stuff on DHGATE.
I personally have never dabbed from a Chinese nail, I have the advantage few have, that is I make my own, but I wouldn't dicurage anyone from buying Chinese, metals are pretty cheap to make something out of an unsafe material, but I'll check it beforehand for peace of mind.