Dutch firm ASML, the world's only maker of extreme ultraviolet (EUV) lithography machines used to manufacture the most advanced computer chips, has pushed back hard against a U.S. government report suggesting one of its EUV tools ended up in China.
According to Tom's Hardware, U.S. Commerce Secretary Howard Lutnick raised concerns in a conversation with ASML executives that China possesses an EUV lithography system. ASML responded by denying that it shipped any such scanners to the People's Republic of China.
The company did not treat the matter lightly. Per Tom's Hardware, ASML characterized the claims as "rumors" that are "inaccurate and damaging to our reputation."
The stakes here are significant. EUV lithography is the single most tightly controlled technology in the chip industry. These machines are extraordinarily complex and expensive, and they are essential for producing the cutting-edge processors that power advanced computing and artificial intelligence. For years, U.S.-led export controls have aimed to keep EUV systems out of China's hands to slow its progress in making the most advanced semiconductors.
If a U.S. official believes China has obtained an EUV system, it would suggest those controls may have failed — a politically charged possibility. ASML's firm denial directly contradicts the concern attributed to Lutnick, leaving an open question about what, if anything, actually reached China.
Why it matters: EUV machines sit at the heart of the U.S.-China tech rivalry, and whether one has slipped past export controls could reshape the debate over how well those restrictions are working.