China's 3nm Chip Progress Without EUV Lithography

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## Overview Chinese researchers have reportedly made early progress in developing semiconductor processing nodes below 3-nanometers using older lithography technology, bypassing the need for advanced extreme ultraviolet lithography (EUV) machines that remain blocked from export to China (SCMP, September 19). ## Background Under current US-aligned export control rules, Dutch equipment maker ASML is barred from selling its state-of-the-art EUV machines to Chinese chipmakers (SCMP, September 19). This has forced Chinese firms and research institutions to pursue alternative technical pathways to advanced chip nodes, using deep ultraviolet (DUV) lithography tools and other workaround techniques rather than EUV. ## Strategic Significance This development is part of a broader pattern of China's drive to chart an alternative path to advanced chipmaking amid US and allied export restrictions. If verified and scaled, progress toward sub-3nm nodes without EUV would represent a significant blow to the effectiveness of the multilateral semiconductor export control regime built around chokepoints like ASML's lithography monopoly. This connects to ongoing debates about the long-term effectiveness of chip export controls and China's semiconductor self-sufficiency drive under its Five-Year Plan. ## What to Watch - Independent verification of the claimed breakthrough and actual yield/cost economics at scale - ASML and US government responses regarding export control tightening - Whether this accelerates or is cited in ongoing US export control policy debates ahead of the Trump-Xi summit