China Mass-Produces Domestic DUV Lithography Tools, ASML Shares Drop 7%
Shanghai Yuliangsheng Technology begins delivery of homegrown immersion systems to SMIC, Hua Hong, and CXMT in breakthrough that bypasses Western export controls.
A state-backed semiconductor equipment manufacturer in Shanghai has begun mass-producing immersion deep ultraviolet (DUV) lithography machines, marking a significant breakthrough in China's efforts to achieve semiconductor self-sufficiency despite years of Western export restrictions.
Shanghai Yuliangsheng Technology started production of the domestic tools this year, with initial deliveries scheduled to reach major Chinese chipmakers SMIC, Hua Hong Semiconductor, and ChangXin Memory Technologies (CXMT) before year-end, according to reporting from Bloomberg and Tom's Hardware.
Market Reaction
Shares of ASML, the Dutch market leader that has long dominated lithography equipment, fell approximately 6.4-7% on July 27, 2026, following news of China's domestic production capabilities. Global memory stocks also declined as investors reassessed the competitive landscape.
The development threatens to erode ASML's technological moat in the DUV segment, though the company maintains exclusive control over extreme ultraviolet (EUV) systems required for the most advanced chip nodes below 7 nanometers.
Production Targets and Market Share
Shanghai Yuliangsheng is targeting production of approximately five units in 2026, scaling to around 20 machines in 2027. While modest compared to ASML's output, the volumes are sufficient to equip domestic fabrication lines for mature-node production.
The breakthrough arrives as CXMT has rapidly expanded its presence in the DRAM market. The Chinese memory maker held approximately 7.6-8% of global DRAM market share in the first quarter of 2026, according to data from Omdia and other research firms. Nomura Holdings projects CXMT could capture 18% of the market by 2028.
Sanctions Evasion Strategy
Since 2019, US-led export controls have blocked Chinese chipmakers from purchasing advanced EUV lithography tools, which are essential for producing the smallest and most power-efficient semiconductors used in smartphones, AI accelerators, and high-performance computing.
By developing domestic immersion DUV technology, China can continue producing chips at nodes down to approximately 7 nanometers using multi-patterning techniques, albeit with lower yields and higher costs than EUV-based production. This allows Chinese manufacturers to sustain production of logic and memory chips for consumer electronics, automotive applications, and industrial systems without relying on foreign equipment suppliers.
Implications for Big Tech
The development carries significant implications for Western technology companies dependent on stable semiconductor supply chains. Secondary reporting citing Financial Times sources indicates Apple has reportedly been testing DRAM chips supplied by CXMT, though this claim could not be independently verified through primary sources.
If Chinese equipment manufacturers can reliably produce DUV tools at scale, major consumer electronics firms may face pressure to diversify sourcing toward Chinese component producers sooner than previously anticipated, potentially reshaping global supply chain dynamics that have remained Western-controlled for decades.
China has also confirmed development of a domestic EUV prototype, though that technology remains at the research stage and is not expected to reach production for several years.