China has started building immersion deep ultraviolet (DUV) lithography machines at home, according to a report from The Information, with the first tools expected to ship to major Chinese chipmakers including SMIC later this year. The development represents a notable milestone in Beijing's long-running effort to reduce its reliance on foreign semiconductor equipment, though the domestically produced machines still lag behind the industry leader ASML on both performance and reliability.
What are immersion DUV lithography machines?
Lithography machines are the precision tools that chipmakers use to print tiny circuit patterns onto silicon wafers — essentially the printing presses of the semiconductor world. Immersion DUV (deep ultraviolet) lithography uses a layer of liquid between the lens and the wafer to improve resolution, allowing for finer patterns than traditional dry DUV systems. These machines are crucial for producing advanced chips used in everything from smartphones to data centers.
Since US-led export controls blocked China from buying ASML's top-end extreme ultraviolet (EUV) systems, immersion DUV tools have become the most advanced option that Chinese chipmakers can reliably use at scale. EUV machines are needed for the very smallest chip features, but immersion DUV can still handle many advanced manufacturing processes.
Why this matters for the chip industry
The move to build these machines domestically is part of a broader push by China to secure its semiconductor supply chain. The country has been investing heavily in homegrown chip equipment and materials, as seen in recent developments like CXMT's massive IPO and ongoing efforts to boost domestic memory chip production.
However, the domestically built immersion DUV tools are not yet on par with what ASML offers. The Dutch company has decades of experience and a near-monopoly on advanced lithography equipment. Chinese manufacturers will need to overcome significant technical hurdles to match ASML's precision, throughput and reliability.
For now, the early deliveries to SMIC and other chipmakers will likely be used for less critical production layers or for research and development purposes, rather than for the most advanced chips. The tools may also face challenges in terms of yield — the percentage of usable chips produced — which is a key metric for profitability in semiconductor manufacturing.
What it means for investors
For everyday investors, this story is less about an immediate threat to ASML's dominance and more about the long-term trajectory of the global semiconductor industry. The chip equipment market is a multi-billion-dollar industry where ASML has long held a commanding position, particularly in the most advanced lithography systems.
If China can successfully develop competitive immersion DUV tools, it could eventually reduce its dependence on foreign suppliers and potentially create new competition in the equipment market. That could pressure margins for ASML and other Western equipment makers over time. However, the timeline for such a shift is measured in years, if not decades.
For investors in chip stocks, the key takeaway is that China's push for self-sufficiency is real and accelerating. This could create opportunities for Chinese equipment makers and their suppliers, while posing a gradual competitive challenge to established players. It also underscores the importance of diversifying supply chains away from China, a theme that has been driving investment in other regions.
The broader context is that the US-China technology rivalry shows no signs of cooling. Export controls have forced China to innovate domestically, and while the initial results may be modest, the direction is clear. Investors should watch for further developments in China's semiconductor equipment sector, as well as any changes in export control policies that could affect the competitive landscape.
What to watch next
Market participants will be closely monitoring the performance of the first domestically built immersion DUV tools once they are installed at SMIC and other fabs. Any signs that the tools can achieve acceptable yields for advanced chips would be a significant positive for China's semiconductor ambitions.
Also worth watching is whether ASML responds with any technological advances or pricing changes to maintain its competitive edge. The Dutch company has been investing heavily in next-generation EUV systems, which could further widen the gap between its offerings and what China can produce domestically.
For now, the news is a reminder that the global chip supply chain is undergoing a fundamental restructuring, driven by geopolitical tensions and national security concerns. Investors in tech and semiconductor stocks should keep an eye on these developments, as they could reshape the industry's competitive dynamics over the coming years.
