They don't. 100% accurate information can't, of course, be obtained - sources claim they have ONE machine from ASML, and node is not known (but probably 28nm).
@Vayra86 - this pretty much ends the quote part, the rest of my post is unrelated to the quote or your other posts. Just to make things clear.
I work in the industry (not foundries, of course) and have worked on several new manufacturing plant design and putting to use. Virtually each machine (for the serious usage, at least) is partially custom-made, according to customers requirements. From final specification from the customer side (ok, it's never 'final-final') to delivery and testing on manufacturing site, it takes
at least one year - when everything is going very smoothly and both sides have significant experience. This is obviously not the case here, so if they (China) purchase machines
now, it will probably take some 2-3 years until anything can be actually produced - also, they will need close cooperation with ASML.
That's where 'fair' USA sanctions kick in. ASML, though not USA company, can't deal with China. That's probably the main reason that HSMC multi-billion project is paused - construction of a manufacturing plant is heavy dependent on knowing exact knowledge of machines involved.
As for 'intellectual property' part and stealing - well, Huawei *has* a legal licence to ARM IP and produces own processors, and whatnot (coughs, world-leading 5G) - their R&D is extremely powerful and advanced.
ASML machines - now I'm taking an educated guess - are much like other hi-tech equipment, in the sense that machine alone isn't enough to just produce whatever it's told to; also, copying (in the sense it is used in the whole thread, not yours in particular) of the advanced equipment usually turns somewhere between "bad" and "suboptimal" - I have experience with Chinese-copies, also with Western-copies of better machines - it always ended the same, at the end costs were similar to buying original. On the other hand, I saw Chinese equipment that was high-quality and performing at least decently - without exception, those weren't just copies - perhaps initially, but as I said, they were probably bad then; they had obviously passed years of refinement, adding
different, often unique solutions for some parts.
In short, complicated machinery is extremely had to copy.