Don't want to drag this thread off topic, I'm sure I read that from someone here (I could be wrong of course).Bollox. The Russians only added Western components on customer demand. One example is the Su-30. The Chinese export Su-30MKK is nearly all Russian components, and the Indian one Su-30MKI has lots of Western content in it. And since Western sanctions in 2014 after annexation of Crimea the Russians can't make contracts to buy military components from the West anyways.
I suppose you could add Russian platforms as an option. My point was that Argentina has very few choices if it wants to have a credible air force. Talking about used F-16s as an alternative to a Chinese plane is pointless as it's never going to be allowed.
If they do buy some they better pay up front.