No they've been poisoning for decades now. Children's toy's and knock off meds/vitamins are the number one cause of concern. Also Chinese food. Have a lab test a sample of Chinese powder and see what you come up with. I'd bet the house that lead content will be thru the roof...
A 'friend' had some tren powder from an unknown supplier tested back in ORD when the good suppliers went down for a while, and found the powder to contain weed killer, amphetamines, DMSO and TCA (chemical peel acid). On the plus side it was about 95% tren and a water wash dissolved most of the junk.
On the negative side, it was so badly made that the ester literally fell off after a couple of months in the bag and it became impossible to dissolve in anything less than pure BA
My friend was a bit annoyed at having to throw out a rather large amount of powder and obviously the fly-by-night Chinaman refused to reply to his angry emails