My understanding is there is an extremely small group of manufacturers of unlyophilized peptides. Janoshik stated: "I'm convinced that there are no more than 2 manufacturers of Retatrutide raws. I've actually dug quite deep into that one." He said that while he hasn't researched the number to tirzepatide raw manufacturers, he believes that number also to be small.
Both QSC and Uther claim that they lyophilize peptides. Whether they do or not is another question.
As a practical matter, you should assume that you're buying from a reseller. Buying from a reseller is not necessarily a bad deal. The manufacturers of raws will not deal with ordinary buyers.
While I suspect Tracy knows much about peptides are produced in China, I don't trust him.