Manufactures computer chips inside mainland China using older equipment because U.S. rules block it from buying the newest tools.
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Manufactures computer chips inside mainland China using older equipment because U.S. rules block it from buying the newest tools.
What this company is and how it runs — written from structure, not news.
Semiconductor Manufacturing International Corp. manufactures silicon chips inside mainland China using older DUV lithography machines, because U.S. export controls have blocked it from buying the newer EUV equipment that foundries like TSMC use. Without EUV, SMIC runs each wafer through multiple sequential exposure passes to reach the same 14nm geometries that EUV prints in one step, which means more machine time per wafer, lower usable die per wafer, and per-unit economics that no amount of additional investment can fully recover. What keeps customers coming back is not process leadership but physical location: Chinese government agencies and domestic chip designers that must source wafers inside mainland China's borders have no other foundry of comparable scale to turn to, and switching to a fab in Taiwan or South Korea would require requalifying every chip design from scratch while potentially violating domestic sourcing rules. The risk sitting underneath all of this is that SMIC's DUV lines still depend on specialty photoresists from Japanese suppliers and deposition tools from Applied Materials and Lam Research — if U.S. controls expanded to cover those inputs, the fabs would still be standing inside China but would gradually lose the foreign materials needed to keep processing wafers.
How does this company make money?
SMIC charges a fee for every wafer it processes, and that fee is higher for more complex processes and for larger 300mm wafers than for older 200mm wafer production. It also earns money by helping chip designers develop and fine-tune new processes, charging for that engineering work as a separate service.
What makes this company hard to replace?
A chip designed and qualified to run on SMIC's production line has to go through a long re-testing process before another foundry can make it reliably — moving to a fab in Taiwan or South Korea means starting that qualification process over. Chinese government customers face an additional barrier: domestic sourcing rules require them to use chips made inside China, so switching to an offshore foundry is not just slow but may not be legally allowed. Companies that have also built packaging and testing partnerships with suppliers inside mainland China would have to rebuild those relationships from scratch if they moved production overseas.
What limits this company?
Because each wafer at the 14nm level requires far more machine passes on DUV equipment than EUV would need, each tool in SMIC's factories produces fewer usable chips per hour than the equivalent tool at TSMC. Buying more DUV machines can increase the total number of wafers SMIC puts out, but it cannot fix the fact that each wafer yields fewer working chips. That ceiling is set by U.S. export rules, not by how much money SMIC spends.
What does this company depend on?
SMIC cannot operate without DUV lithography machines from ASML, silicon wafers from Japanese suppliers Shin-Etsu and SUMCO, specialty chemicals including photoresists from JSR and Tokyo Ohka Kogyo, and deposition and etch tools as well as ion implantation systems from Applied Materials and Lam Research.
Who depends on this company?
Chinese smartphone makers like Xiaomi and Oppo rely on SMIC for processor chips sourced domestically — losing SMIC would force them to find chips from overseas foundries, disrupting their supply chains. Automotive companies including BYD and NIO depend on SMIC for locally made semiconductors that help them meet Chinese regulatory requirements. Chinese government agencies would lose their only meaningful source of chips made entirely within mainland China for sensitive electronics, a gap no foreign foundry could fill for those applications.
How does this company scale?
Once SMIC develops a working recipe for a chip process at one factory, that knowledge can be copied to its other factories, which gradually lowers the cost per wafer as more volume runs through the same proven steps. What does not scale with investment is the process technology itself — U.S. export controls mean SMIC cannot buy its way to finer chip geometries, so the technological ceiling stays fixed no matter how many factories it builds or how much it spends.
What external forces can significantly affect this company?
The U.S. Department of Commerce's Entity List restrictions and CHIPS Act export controls directly limit which machines and materials SMIC can buy from abroad. Geopolitical tension between the U.S. and China also pushes American fabless chip companies away from using SMIC, shrinking that part of its potential customer base. On the other side, the Chinese government's National Integrated Circuit Industry Investment Fund pushes SMIC to expand capacity and advance its technology quickly, even though export controls cap how far the technology can actually go.
Where is this company structurally vulnerable?
If the U.S. extended its export controls to cover DUV lithography machines from ASML, specialty photoresists from JSR and Tokyo Ohka Kogyo, or deposition and etch tools from Applied Materials and Lam Research, SMIC's factories would still be sitting inside mainland China but would run out of the foreign-made supplies needed to actually process wafers. No Chinese-made replacement for any of those inputs currently exists at the scale SMIC needs, so the fabs would go dark even though the demand from Chinese customers would still be there.
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