Sources: SMIC used ASML's DUV machines to produce its 7nm chip used by Huawei; ASML has never sold its EUV tools to China, but older DUV models can be retooled
- SMIC mixed ASML tech with other tools in Huawei chip: sources — New US controls regulate sale of some ASML machines in China Bluesky: @elkmovie.bsky.social . X: @silvermanjacob and @sarahannjacob Bluesky: Michael Love / @elkmovie.bsky.social : This was the subject of a huge freak-out for a week or two, but now it seems like the experts who suggested that they were using older technology for 7nm and throwing money at the problem of low yields were, in fact, correct. [embedded post] X: Jacob Silverman / @silvermanjacob : I know it's part of a broader tapestry of real national security and supply chain issues, but it's funny that an ongoing foreign policy crisis for the US government revolves around the fact that a Chinese company made a cool phone. https://www.bloomberg.com/... [image] Sarah Jacob / @sarahannjacob : SCOOP ALERT: China's SMIC used equipment from ASML to manufacture an advanced processor for a Huawei smartphone that alarmed the US, sources say https://www.bloomberg.com/... via @technology by @cagankoc and @DBaazil
Context & Ripple Effects
This report clarified that China’s advanced-node progress did not depend on access to ASML’s most restricted lithography systems: earlier reporting likewise identified DUV rather than EUV as the route to SMIC’s 7nm output. That distinction matters because export controls can constrain leading tools without removing the usefulness of already installed, older equipment.
The subsequent coverage shows the workaround was not isolated. SMIC was later reported to be drawing on a broader mix of US and Dutch chipmaking equipment, while China’s later DUV-retrofitting effort points to a sustained attempt to extend the productive life of accessible tools.
First-order effects
- Huawei gains a domestic 7nm supply path through SMIC, while SMIC demonstrates that reconfigured DUV equipment can support an advanced-node product without EUV access.
- ASML’s older DUV installed base in China becomes a more consequential export-control exposure, even though the company had not sold EUV tools there.
Second-order effects
- US and allied policymakers face pressure to assess capabilities enabled by servicing, retooling, and combinations of non-EUV tools—not only whether an EUV machine was shipped.
- Chinese chipmakers have an incentive to prioritize process engineering and tool integration around equipment already in country, while Huawei can reduce dependence on externally sourced advanced chips.
Third-order effects
- If DUV-based production becomes repeatable at commercially useful yields, controls focused on the newest lithography generation may slow China’s frontier progress rather than fully prevent it.
- The strategic contest shifts toward the resilience of complete manufacturing toolchains: lithography restrictions remain important, but their effect depends on complementary tools, know-how, and domestic substitution.
The trend: This is one data point in the widening export-control gap between restricting frontier equipment and limiting what existing, adaptable semiconductor fabs can produce.