The laser source, not the rest of the machine.

The US used this agreement to bar ASML from selling the machines to China in 2018.

The machine is a clump of metal without the light source.

The metrology is coming from Taiwan and California (HMI) as well. The Veldhoven campus "only" does final assembly (which should not be underestimated either - it's complex and high precision work).

But it's the light source and the metrology that is the blocker.

Edit: can't reply

> And mirrors from Carl Zeiss

Absolutely! But note how Zeiss/Trumpf is not ASML. If the US DoE changes the terms of the Cymer partnership and pressures Taiwan (who have just purchased $8B in US military equipment and whom the EU logistically speaking cannot protect) to revert the HMI acquisition, ASML is over.

Additonally, a lot of the muscle around Zeiss/Trumpf's mirrors is also at the Zeiss office in the Tri-Valley because of their partnership with LLNL.

And both China [0] and Japan [1] are in the process of building an Ex-ASML supply chain for EUV, NA EUV, and DUV, and will likely reach that point by the late 2020s to early 2030s.

[0] - https://www.reuters.com/world/china/how-china-built-its-manh...

[1] - https://www.nikkei.com/nkd/company/us/SNPS/news/?DisplayType...