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US semiconductor export controls have targeted China’s most advanced chip-making tools since 2022 — but a critical gap remained. Older deep ultraviolet (DUV) machines still flowed freely to Chinese chipmakers, enabling production of automotive chips, AI edge processors, and telecom hardware without restriction.
That gap may soon close. In April 2026, U.S. lawmakers introduced the MATCH Act — a bipartisan bill that explicitly names five Chinese chipmakers and bans both the sale and servicing of DUV immersion lithography systems. For ASML, the Dutch company whose lithography machines underpin virtually all modern chip production, China fell from 33% of total revenue in 2025 toward a projected 20% in 2026 — and the MATCH Act threatens to push that figure even lower.
This article explains what the MATCH Act covers, which companies are named, how global markets are responding, and what the new restrictions mean for Asia’s semiconductor supply chains.
What Is the MATCH Act?
The Multilateral Alignment of Technology Controls on Hardware Act — abbreviated MATCH — was introduced in the U.S. House of Representatives on April 2, 2026, with a Senate companion bill advancing at the same time. The legislation carries bipartisan support, reflecting rare Congressional alignment on the view that semiconductor technology is a core national security priority.
Earlier export controls had already banned sales of extreme ultraviolet (EUV) lithography systems to China — the machines that ASML produces exclusively, used to print chips at 5nm and below. However, older deep ultraviolet (DUV) immersion lithography systems remained legal to export. These machines print chips at 14nm to 28nm nodes — older technology, but still essential for automotive electronics, industrial equipment, AI edge hardware, and telecommunications chips. The MATCH Act adds DUV immersion lithography and cryogenic etching equipment to the restricted list, closing the biggest remaining loophole in U.S. chip equipment export policy.
Why the Service Ban May Matter More Than the Sales Ban
The MATCH Act goes further than restricting new equipment sales. It defines “servicing” broadly to include installation, maintenance, remote software updates, and technical support. Modern chipmaking machines require continuous software calibration and regular on-site service. Without access to these services, machines already inside Chinese fabs degrade faster and cannot maintain production specifications — making a service ban potentially more disruptive than a sales ban alone.
The bill also extends restrictions to subsidiaries and affiliated companies of named Chinese chipmakers, closing corporate restructuring workarounds. Allied nations are given exactly 150 days to demonstrate they’ve adopted equivalent restrictions. If they fail to comply, the U.S. Department of Commerce can implement controls directly on foreign companies — including ASML — regardless of what Dutch or Japanese governments decide independently.
ASML and the Five Chinese Chipmakers Named in the Bill
The MATCH Act identifies five Chinese companies as restricted entities. Each represents a different strategic pillar of China’s domestic semiconductor ambitions:
- SMIC (Semiconductor Manufacturing International Corporation) — China’s largest contract chipmaker
- Hua Hong Semiconductor — key producer of power chips and specialty semiconductors
- Huawei — China’s largest telecom and consumer device company, now designing its own chips
- CXMT (ChangXin Memory Technologies) — China’s primary DRAM memory chip manufacturer
- YMTC (Yangtze Memory Technologies) — China’s leading NAND flash memory producer
Together, these five companies span China’s most critical chip segments: logic, memory, and telecom silicon. For ASML, the financial exposure is direct. China was its single largest market in 2025, generating approximately 33% of total revenue — already projected to fall to 20% in 2026 under existing restrictions before the MATCH Act was proposed. Analysts now estimate that full MATCH Act enforcement could reduce ASML’s earnings per share by up to 10% beyond current projections, with the broader financial hit ranging from a low single-digit percentage of sales to a double-digit EPS impact.
The market reacted immediately. After the bill was publicized, ASML shares tumbled as much as 7.1% intraday in Amsterdam, stabilizing at a 3.5% decline by close, and falling a further 1.7% in New York trading. Other semiconductor equipment makers — Tokyo Electron, Applied Materials, and Lam Research — also declined, signaling investors see broad risk across the chip equipment sector, not just for ASML.
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What the MATCH Act Means for Asia’s Semiconductor Supply Chains
The 150-day allied nations clause is the MATCH Act’s most internationally significant provision. It is designed to bring the Netherlands and Japan — home to ASML and Tokyo Electron respectively — into full alignment with U.S. export policy, rather than letting them continue profiting from loopholes that U.S. companies cannot use.
The Dutch government has long tried to balance Washington’s demands with its own economic interests. ASML is the Netherlands’ most valuable listed company, with a market capitalization exceeding €200 billion. Restricting its China business carries real consequences for the Dutch economy. The MATCH Act removes that diplomatic flexibility: align fully with U.S. policy, or watch Washington impose controls on ASML directly.
Japan adopted partial semiconductor equipment export restrictions in 2023, covering some advanced tools, but has not matched U.S. standards fully. The MATCH Act establishes a stricter requirement — and a firm 150-day deadline — for Tokyo to close that gap or face the consequences of U.S. direct action against Japanese equipment makers.
For Southeast Asia, the picture is more favorable. As chip supply chains restructure away from China, Malaysia, Vietnam, Thailand, and the Philippines are all attracting new investment in semiconductor assembly, packaging, and testing — the critical back-end of chip manufacturing. According to Deloitte’s 2026 global semiconductor industry outlook, the Asia Pacific region will remain the world’s largest regional semiconductor market at $526 billion, within a global industry projected to reach $975 billion in total sales in 2026 — a record driven by surging AI infrastructure demand. Southeast Asian manufacturers offering back-end semiconductor services are positioned to capture a growing share of that expansion as Western chip companies accelerate diversification away from China.
Common Questions — US Semiconductor Export Controls
Q: What is the MATCH Act?
A: The MATCH Act — Multilateral Alignment of Technology Controls on Hardware — is a proposed U.S. law introduced in April 2026. It bans the sale and servicing of deep ultraviolet (DUV) immersion lithography machines and cryogenic etching equipment to five named Chinese chipmakers: SMIC, Hua Hong, Huawei, CXMT, and YMTC. It also requires allied nations to adopt matching restrictions within 150 days or face direct U.S. enforcement.
Q: Why does the MATCH Act target DUV machines specifically?
A: Prior U.S. export controls had already banned EUV (extreme ultraviolet) lithography systems to China, which produce chips at 5nm and below. DUV machines produce chips at older 14nm to 28nm nodes — still critical for automotive electronics, AI edge hardware, and telecom chips. The MATCH Act closes this loophole by explicitly restricting DUV immersion lithography systems and their ongoing servicing.
Q: How will the MATCH Act affect ASML’s revenue?
A: ASML generated approximately 33% of its revenue from China in 2025, a figure already forecast to fall to around 20% in 2026 under existing rules. If the MATCH Act passes, analysts estimate the additional impact could reduce ASML’s earnings per share by up to 10% beyond current projections. Its stock fell as much as 7.1% intraday in Amsterdam after the bill was announced.
Q: Is the MATCH Act already in effect?
A: No. As of April 2026, the MATCH Act is a proposed bill introduced in the U.S. House of Representatives. A parallel Senate version is also being considered. The legislation still needs to pass both chambers and receive presidential signature before becoming enforceable law. However, financial markets are already pricing in a significant probability that it will advance.
Conclusion
The MATCH Act represents a significant escalation in the US-China semiconductor technology war. Three key takeaways: The DUV loophole is closing — China’s access to chip-making tools is shrinking at every technology level, not just the cutting edge. ASML faces material earnings risk — a potential 10% EPS reduction beyond already-falling China revenue is a significant financial headwind. And Southeast Asia stands to benefit — as supply chains diversify away from China, the region is positioned to attract growing semiconductor back-end investment over the next three to five years.
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Last Updated: April 13, 2026
