ASML EUV in China? U.S. Raises Alarm as Company Denies Any EUV System Is Present
U.S. officials, including Commerce Secretary Howard Lutnick, have raised concerns that an ASML EUV in China may exist; ASML rejects the claim and the government has not publicly shown evidence.
Allegation from U.S. Officials
Senior U.S. officials have privately told ASML executives they are worried an extreme ultraviolet (EUV) lithography system — the only class of machines capable of printing today’s most advanced semiconductor patterns — may have reached China.
Those officials say they have evidence of EUV-related components and transport equipment sent to China but have not made that material public or shown it to ASML.
ASML’s Firm Denial and Tracking System
ASML has repeatedly denied that any EUV system is operating in China and says it tracks every machine it ships, whether in active use or dismantled and returned.
Company executives emphasize internal controls and access restrictions that separate employees who handle EUV technology from those in China, arguing the firm would know if a complete system were outside authorized customers.
Why an EUV Transfer Would Be Significant
EUV machines are central to producing the densest, most advanced chips used in AI accelerators and high-end processors, and no second supplier currently matches ASML’s capability.
If an EUV device were in China, U.S. and allied export controls intended to limit cutting-edge manufacturing tools from reaching Beijing’s military and industrial base would face one of their most consequential breaches.
Evidence, Transparency and Disputed Claims
Officials asserting the transfer say they possess supporting documentation but have declined repeated requests to disclose it publicly or to ASML itself.
The lack of shared evidence has left the allegation unresolved in public view and prompted calls from industry watchers for transparent verification before any regulatory or diplomatic escalation.
Commercial Stakes for ASML and Policy Risks
ASML is a linchpin of the global semiconductor supply chain, with a market valuation estimated near $700 billion in June 2026 and a de facto monopoly on EUV tools.
The company sells older deep ultraviolet (DUV) equipment to China under existing export permissions, a policy ASML describes as preserving a generational technology gap while maintaining commercial ties.
Intersecting Industrial Policy and Government Investments
The Commerce Department invested in late 2025 to support startups pursuing new lithography light-source technologies, including up to $150 million pledged to xLight in December 2025.
Those moves, and private funding to rival efforts such as Substrate, have sharpened scrutiny of the competitive landscape and prompted questions about whether regulatory attention on ASML could intersect with broader U.S. industrial policy goals.
Potential Legislative and Diplomatic Fallout
A bipartisan bill in Congress would extend restrictions and effectively bar DUV shipments to China, a measure that could strip a source of revenue ASML expects to rely on in 2026.
The legislation passed a key committee in April and remains under consideration, even as the administration has not announced a formal position on the proposed ban.
The unfolding dispute centers on claims by senior U.S. officials and ASML’s categorical denials, leaving the global semiconductor community awaiting clearer evidence or an independent accounting of any transfer.
