For nearly two decades, ASML has held something close to a monopoly on the machines that print the circuits inside every advanced chip on the planet. That position looked a little less secure this week after reports that a Chinese state-backed manufacturer has begun mass-producing its own immersion deep ultraviolet (DUV) lithography tools, sending the Dutch company’s shares to their lowest level since early June.
The Shanghai-based effort has reportedly been under evaluation at SMIC since September 2025, initially targeted at 28-nanometre production, though engineered with the option to push toward more advanced 7-nanometre or 5-nanometre nodes using complex multipatterning techniques.
Most of the machine’s components are said to be sourced domestically, with only limited imported parts still required. The reaction was immediate and brutal. ASML’s US-listed shares fell between roughly 5% and 8% during Monday’s session, wiping out an estimated $44 billion in equity value, more than four times the company’s implied 2026 China revenue. Equipment makers Applied Materials, Lam Research and KLA slid in sympathy.
A modest breakthrough, magnified by markets
Strip away the share price drama and the numbers involved are small. The reported five units represent roughly 3.8% of ASML’s targeted 2026 immersion-DUV capacity of about 130 systems, while the 20 units projected for 2027 would equal roughly 11.8% of its estimated capacity of 169 systems that year. Prospective recipients include Semiconductor Manufacturing International Corporation, Hua Hong Semiconductor and memory-chip producer ChangXin Memory Technologies.
Crucially, this is DUV, not EUV. The machines are a generation behind the extreme ultraviolet technology ASML uses to manufacture the world’s most advanced chips, a domain that remains firmly outside China’s reach for now. Analysts have been quick to temper the excitement.
The reason the gap is so stubborn comes down to physics as much as engineering effort. Some lessons from building DUV tools will transfer, he noted, but plenty will not. ASML itself has not treated DUV as an afterthought either. In its own words to shareholders, the company has described the product line as one that “will remain a workhorse” of its business, generating billions in system sales even as EUV grabs the headlines.
What it means for ASML’s numbers
The market’s reaction says more about sentiment than substance, at least for now. ASML had just posted a strong quarter, with orders that its chief executive Christophe Fouquet called extremely strong. That the shares could still shed billions in value on a report of five machines shows how sensitive investors have become to any sign that China’s export-control-driven isolation is cracking.
There is a genuine commercial story underneath the noise, though. China’s contribution to ASML’s net system sales fell to 14% in the second quarter, down from 19% in the first, a decline that reflects both tightening export restrictions and the possibility that Chinese chipmakers are finding alternative supply. For a company forecasting 2026 revenue of $49 billion to $51 billion, with roughly a fifth expected from China, even a partial substitution of DUV demand by domestic alternatives would be felt over time, even if it barely registers today.
The bigger question is whether a homegrown DUV capability closes the gap that Western export controls were designed to keep open. If the reporting holds up, it is close to the exact outcome those controls were meant to prevent: a workaround built at home because the equipment could no longer be bought abroad. That does not make China’s EUV ambitions any less distant. It does mean the mature-node chip market, the layer most relevant to data centres, networking gear and power electronics, now has a credible second source developing inside China’s own borders.
Why this matters beyond the chip sector
DUV lithography supports the mature-node chips that go into power management ICs, networking silicon and memory, the unglamorous components that keep racks running as much as any AI accelerator does. A domestic Chinese alternative, however immature, adds a second thread to a supply chain that infrastructure buyers have spent the past few years trying to de-risk in the opposite direction.
That tension between technological self-sufficiency and market fragmentation is a theme Capacity has tracked closely. CXMT, one of the chipmakers reportedly lined up to receive the new tools, went public earlier this month in a listing that tested China’s chip sovereignty bet, built on the same reliance on multi-patterned DUV that this story now extends. Huawei’s own chip ambitions, and the way DeepSeek V4 triggered a scramble for domestic AI silicon, show how quickly Chinese buyers pivot toward homegrown hardware when import routes narrow. And as Capacity reported when Beijing was said to be weighing its own export controls on AI chips and models, the flow of restrictions is no longer one-directional.
For operators and enterprises assessing where their infrastructure sits in this landscape, the sovereignty question runs both ways. Capacity’s recent look at what sovereign AI infrastructure actually means for telecoms argued that jurisdiction, governance and supply chain control are becoming commercial differentiators in their own right, not just compliance boxes to tick.
A Chinese DUV tool with a handful of units in production this year will not reroute global chip supply chains overnight. But it is one more data point in a pattern that data centre buyers, hyperscalers and equipment vendors alike will need to keep watching: strategic technology increasingly follows national borders, whether or not the underlying performance has caught up yet.
None of this changes the near-term picture much. ASML’s EUV monopoly is intact, its order book is healthy, and five machines a year from a Shanghai start-up will not dent that in 2026. But for an industry that has spent years assuming Western equipment dominance was a fixed variable, this week was a reminder that the assumption has an expiry date, even if nobody can yet say when it falls due.
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