[mercurywells]

not even that, they really make the machines that make the patterns that are used to develop the electronic circuits on the ICs

[denotational]

I’m not sure that’s accurate: ASML don’t make masks (i.e. the patterns), they make the EUV photolithography machines that are used in conjunction with the masks.

The physical masks themselves are usually made by Hoya, and the technology to actually etch the masks is made by Veevo.