The problem of South Korean companies is dependence on the USA, so both Samsung and SK Hynix refused to sell old equipment removed from the company’s factories during the update. As mentioned, old lithography machines may end up in China or Russia, which is unacceptable for the United States.
The situation is that Korean manufacturers, due to their advanced production, regularly update equipment for the entire production chain and sell old installations to companies that resell them, mainly to China, which produces its own chips. And now this equipment is literally gathering dust in warehouses in Seoul and other South Korean cities.
Source: Ferra

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