UBS estimates China needs 2-5 years for immersion-DUV high-volume manufacturing, a decade-plus for any EUV alternative

What happened

⚠️ OUT OF WINDOW (2026-09-01, before this sweep's 2026-09-02 15:00 ET start) — flagged because it directly answers this thread's central open question and is not recorded anywhere on the map. UBS analysts, cited by TrendForce and reported separately, estimate China will reach immersion-DUV high-volume manufacturing capability within two to five years, based on patent activity around light-source and laser subsystems they read as comparable to where ASML stood roughly 15 years before its own EUV mass-production ramp. On EUV specifically, UBS places China's program roughly where ASML was in 2004 and does not expect a viable EUV alternative to emerge within this decade. This is an analyst timeline forecast, not a delivery confirmation — it does not meet this thread's own "delivery, not production" test (no installed-and-running tool at a named fab is newly confirmed here) — but it is the first dated, sourced numeric range this map has seen for the gap this thread was opened to track. (TheNextWeb, ChipBriefing)

Sources 2

TheNextWeb thenextweb.com solid 0.798 no consensus
ChipBriefing chipbriefing.substack.com unrated

Credibility ratings combine two public datasets: Lin et al. 2023, PNAS Nexus 2(9):pgad286 (CC BY 4.0) for the domain-quality score, and Wikipedia's perennial-sources list (CC BY-SA 4.0) for the reliability tier. A rating describes an outlet's general record, never this particular article. Unrated means absent from those datasets — not a judgement.

The wider story

This event sits inside Homegrown DUV, which carries how it developed before and since.

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Adjacent threads (shared entities):

· Memory Squeeze

· CXMT IPO