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Holding back China's chipmaking progress is a fool’s errand, says U.S. Commerce Secretary | Tom's Hardware
(www.tomshardware.com)
This is a most excellent place for technology news and articles.
its partially tsmc, the other half is getting ASML EUV machines, which require getting past US/Dutch trade secrets.
ASML is the top level grip on edge node manufacturing because not all companies at the post 14nm wall believed that it would arrive in a timely matter. TSMC was the one that took that bet and why its the biggest.