China's ASML Lithography Machine Stockpile

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## Overview Chinese semiconductor plants have amassed hundreds of immersion lithography machines worth billions of dollars in recent years, prompting former US officials to urge Washington and its allies to shut down further exports (SCMP, October 2). Chinese-owned fabs had acquired an estimated 343 immersion deep ultraviolet (DUV) lithography systems by early 2026, according to a report published in late September by the Centre for Technology & Statecraft (CTS), a Washington research group established in August (SCMP, October 2). ## Key Details - The report was co-authored by former US officials and calls for a complete export ban on lithography tools to China (SCMP, October 2). - The stockpiling appears aimed at insulating Chinese chipmakers against future tightening of export controls. - This development sits alongside related stories about ASML's near-zero European sales and broader US-China semiconductor tensions. ## Why It Matters The scale of China's DUV lithography stockpile undercuts the effectiveness of existing export controls, since machines already inside China can sustain mature-node chip production for years regardless of future restrictions. This is a pivotal data point in the ongoing US-China tech war and could shape the next round of export control policy, including potential moves to restrict servicing, spare parts, or software updates for already-exported equipment. ## Developments to Watch - US and allied (Netherlands, Japan) policy response — potential expansion of export bans to cover maintenance/service agreements. - ASML's public position and lobbying regarding further restrictions. - Chinese semiconductor output data reflecting the stockpile's impact on production capacity.