"The research results show that China controls the supply of primary materials, manufacturing, installed capacity, and recycling capacity. China alone produces at least 80 % of the main components of PVs."
I'm asking about the supply chain for drilling, refining, and processing oil, my friend. Is that supply chain completely domestic? Nothing from China in there?
You would need to do full supply chain analysis. Probably only one doing full supply chain analysis is Pentagon. They had experts for this kind of work.
"How The CIA Secretly Bought Soviet Titanium To Build The SR-71 Blackbird"
https://www.sciencedirect.com/science/article/pii/S277273782...