Overview
- Multiple outlets reported Monday that China has begun limited manufacture of domestically developed immersion deep ultraviolet (DUV) lithography machines, with about five units expected this year and roughly 20 planned for 2027.
- Semiconductor Manufacturing International Corporation tested a Yuliangsheng-built immersion DUV tool in September 2025 and is aiming for active mass production at its fabs as early as 2027, though broader deployment still requires more testing.
- The new machines are built for 28 nm-class processes and company claims say advanced multi‑patterning could push them toward 7 nm, but multi‑patterning adds extra mask steps, time, cost, and technical risk compared with native EUV lithography.
- Markets reacted to the reports with ASML shares sliding and U.S. lawmakers already proposing tighter rules on DUV tools in April 2026 as policymakers weigh new limits on exports and servicing to China.
- China still lacks commercial EUV systems and relies on a mix of imported DUV stock and early domestic units, so the near-term effect will mainly help makers of automotive, industrial and IoT chips by giving them an alternative supply source if domestic tools prove reliable.