CTS: Chinese logic and memory chipmakers have imported 343 ASML immersion DUV lithography scanners from 2012 to early 2026, many of which can make 7nm chips
Context & Ripple Effects
The CTS tool count gives scale to two earlier reported workarounds: retrofitting older ASML DUV systems for advanced chips and SMIC's testing of a domestically produced DUV machine. The underlying report says Chinese fabs had about 343 immersion-DUV tools by early 2026, roughly 270 of them from ASML, and that the equipment can be adapted for 7nm logic and HBM.
That installed base matters because it makes advanced-node capability a question of how fabs adapt and deploy equipment already on hand, rather than solely of obtaining additional frontier lithography tools.
First-order effects
- Chinese logic and memory fabs have a substantial installed base of immersion-DUV scanners that can support efforts to produce 7nm-class chips and HBM.
- ASML's previously delivered DUV fleet remains strategically important to Chinese customers even where access to newer lithography equipment is constrained.
Second-order effects
- The reported DUV inventory gives SMIC's domestic-tool program a practical benchmark: locally made machines must displace or complement a large base of imported equipment, not start from zero.
- Restrictions aimed at new equipment sales have less immediate leverage over fabs that can retrofit and extend older DUV tools for advanced-chip production.
Third-order effects
- If Chinese fabs continue adapting installed DUV capacity while developing domestic replacements, lithography controls will increasingly be judged by the productive capability of equipment already deployed, not just by shipment approvals.
- The result points toward a more fragmented semiconductor equipment market, in which domestic alternatives are developed alongside long-lived imported tool fleets.
The trend: Advanced-chip supply is shifting from dependence on access to the newest lithography systems toward extracting more capability from installed DUV equipment while building domestic substitutes.