Shanghai Aishengna Electronic Technology Group has been identified as the state owned company producing China's first domestic immersion deep ultraviolet lithography scanners, a milestone in Beijing's drive for semiconductor independence. Formed in August 2023 with registered capital of roughly RMB 7 billion ($1 billion), Aishengna absorbed engineering teams from Shanghai Yuliangsheng Technology and Shanghai Micro Electronics Equipment, positioning itself at the center of China's DUV ambitions.

What You Need to Know

Shanghai Aishengna Electronic Technology Group was established in August 2023 and is now confirmed as the manufacturer behind China's inaugural immersion DUV lithography tools. The company's initial scanners will target chips at 28nm and above, while a viable 7nm capable system is not expected before 2038. Critical subsystems such as excimer lasers, projection optics and ArF photoresists remain overwhelmingly sourced from Japan, Germany and the United States, limiting the immediate strategic value of domestically built platforms.

Aishengna's Charter and Early Milestones

Shanghai Aishengna Electronic Technology Group, commonly referred to as Aishengna, has not publicly commented on Reuters' identification of it as the immersion DUV builder. Shareholders including SMEE and Yuliangsheng also did not respond to requests for confirmation. Meanwhile, SMIC has been testing an immersion tool from Yuliangsheng since September 2025, and first deliveries of Aishengna's production units are slated for SMIC, Hua Hong Semiconductor and ChangXin Memory Technologies. The timeline for volume deployments remains opaque, but analysts estimate that meaningful output will not materialize before the end of this decade.

Ecosystem Gaps That Limit Domestic Tools

A scanner alone does not complete a lithography cluster. The coater track responsible for resist film application, baking and pattern development must be mechanically and thermally matched to the scanner. Shenyang Kingsemi has reached 28nm class track capability and is pushing toward 14nm, still short of the precision needed for immersion multipatterning. On the chemistry side, JSR, Tokyo Ohka Kogyo, Shin-Etsu and Fujifilm control more than 72% of the ArF photoresist market, and Chinese suppliers hold less than 1% of ArF immersion resist specifically. Nata Opto-electronic passed customer qualification for its 25 ton ArF line in December 2020 but has seen little commercial volume. Xuzhou B&C claims its ArF immersion products cover 45nm down to 14nm, yet chairman Fu Zhiwei recently put mass production of advanced resists five years out.

  • Excimer lasers: Cymer, Gigaphoton and Coherent hold more than 80% of the ArF laser market. Cymer is an ASML subsidiary. Beijing RSLaser's highest power prototype targets 90nm nodes, generations behind what 28nm immersion demands.
  • Projection optics: Carl Zeiss SMT has been ASML's sole supplier since 1983. Zeiss SMT revenue quadrupled from €1.2 billion in 2016 to €4.1 billion in 2024. Whether Japanese or European components are inside Aishengna machines is unknown.
  • Photoresist maturity: Chinese ArF immersion resist holds under 1% market share. Indigenous production remains years away from meeting 28nm overlay and defect density specifications.

Why This Matters

The arrival of a domestic immersion DUV tool does not solve China's lithography gap overnight. Without ready access to EUV systems, Chinese foundries like SMIC and memory producers like ChangXin Memory Technologies must rely on extensive multipatterning on DUV platforms to reach 7nm node equivalent performance. One published comparison indicates a DUV-only 7nm flow requires roughly 19 spacer defined masks versus about 10 for an EUV based N7+ process, consuming scarce scanner hours and raising defect densities. SemiAnalysis estimates SMIC's 7nm defect density near 0.14, roughly double TSMC's N5 and N6 processes. Every additional multipatterning step also increases manufacturing cost and cycle time, eroding competitiveness against global peers who already deploy single exposure EUV.

The outlook grows more precarious when factoring in U.S. legislative action. H.R. 8170, known as the MATCH Act, would ban both export and servicing of immersion DUV systems to any destination in China and designate SMIC, Hua Hong, Huawei, CXMT and YMTC as restricted entities by statute. Former ASML chief executive Peter Wennink acknowledged that the company can service most Chinese tools except those containing U.S. origin spare parts subject to export control. If the MATCH Act becomes law, every installed immersion machine in China faces service disruption, making a domestic alternative not just an industrial ambition but a strategic necessity.

Competing Against Time and Technology

ASML sold approximately 33% of its quarterly systems to Chinese customers during 2025, but that share fell to 14% in Q2 2026 as existing purchase quotas ran out. Installed base management contributed €2.8 billion of ASML's €9.3 billion second quarter revenue. Any forced halt to service contracts would accelerate the need for self sufficient support infrastructure. Shanghai Aishengna Electronic Technology Group now carries enormous expectations, but its ability to deliver a production worthy immersion scanner before the end of this decade hinges on dozens of subsystem breakthroughs that have historically taken two to three decades in other markets. The company's path mirrors the broader Chinese semiconductor strategy: capital abundant, talent absorbing and geopolitically necessary, yet locked in a race where the finish line keeps moving further ahead.