China starts production of home-grown immersion DUV chipmaking tools

China has started production of its own immersion deep ultraviolet (DUV) lithography machines, according to a source cited by Reuters on July 28, 2026. The development marks a significant step in the country's effort to build a self-sufficient semiconductor supply chain amid tightening export controls from the United States and its allies.

The move directly affects global chip equipment makers and semiconductor stocks. Shares of ASML, the Dutch company that dominates the market for advanced lithography systems, slid on the news, as reported by Bloomberg.com. The broader technology sector also felt the impact, with a global tech rout triggered by the report, according to The Telegraph.

This matters because immersion DUV tools are critical for manufacturing advanced chips used in everything from smartphones to artificial intelligence systems. If China can produce these machines domestically, it could reduce its reliance on foreign suppliers and potentially reshape the competitive landscape of the global semiconductor industry, which has been a focal point of geopolitical tensions.

The Reuters exclusive, citing an unnamed source, stated that China has begun production of these home-grown immersion DUV chipmaking tools. The report did not provide specific production volumes, technical specifications, or the names of the Chinese companies involved. The event date is July 28, 2026.

For years, China has invested heavily in its semiconductor sector under the "Made in China 2025" initiative, aiming to achieve self-sufficiency in key technologies. However, progress has been hampered by export restrictions, particularly from the U.S., which have limited China's access to advanced chipmaking equipment and know-how. Previous reports have highlighted China's struggles to develop competitive lithography systems, making this reported breakthrough a notable, if unverified, development.

While the report suggests a major advancement, CNBC noted that the breakthrough comes with significant caveats, implying that the capabilities or scale of production may still lag behind industry leaders. The likely next steps will involve close scrutiny from industry analysts and governments to assess the true technical level of China's tools and whether they can be produced at scale. Further export control measures could also be considered in response.