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U.S. Eases Chip Software and Ethane Export Curbs Amid China Trade Truce

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The United States has lifted export restrictions on chip design software and ethane to China, signaling further de-escalation of trade tensions between the world’s two largest economies. The move follows Beijing’s agreement to ease controls on rare earth exports—a key concession that helped maintain a fragile trade truce.

Restrictions Reversed

Leading electronic design automation (EDA) software firms—Synopsys, Cadence Design Systems, and Siemens—confirmed they are resuming sales and support for Chinese customers after receiving notification from the U.S. Department of Commerce that prior restrictions have been revoked.

  • Siemens announced Thursday it has restarted business operations in China, causing its shares to rise 1.7% after market opening.

  • Synopsys said it plans to restore customer access within three business days.

The EDA tools, essential for advanced semiconductor design, are dominated by these three firms, which together control over 70% of China’s market, according to Xinhua.

Ethane Export Curbs Also Rescinded

On the same day, the U.S. government also notified ethane producers that licensing requirements imposed in May and June had been withdrawn, allowing resumption of exports to China.

These curbs had been part of a broader U.S. response to China’s April suspension of rare earth exports, which had disrupted global supply chains for automakers, aerospace firms, chipmakers, and military contractors.

The Bigger Picture: Rare Earths for Rollbacks

According to a source familiar with the internal U.S. strategy, the Biden administration took a calculated step:

“The U.S. have escalated to de-escalate. They put restrictions on many more items in order to get the Chinese to back off on rare earths.”

Following negotiations, both sides reportedly confirmed a framework agreement in which:

  • China will review export applications for sensitive goods,

  • And the U.S. will roll back countermeasures imposed earlier this year.

China’s Commerce Ministry affirmed the arrangement last Friday, paving the way for what analysts describe as a return to February-March status quo.

Remaining Uncertainties

Despite the rollback on EDA tools and ethane, it remains unclear whether the U.S. has also lifted other strategic restrictions, including:

  • GE Aerospace’s license suspension for jet engine exports to COMAC’s C919 aircraft,

  • Or limitations on nuclear equipment suppliers selling to Chinese power plants.

The U.S. Department of Commerce has not yet commented on the latest developments.

Outlook

With both countries aiming to stabilize economic relations amid broader geopolitical tensions, more trade rollbacks could follow—particularly if the framework agreement holds. However, sector-specific restrictions tied to national security concerns are likely to remain or evolve in other forms.

U.S. Suspends Nuclear Equipment Export Licenses to China Amid Escalating Trade Tensions

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The U.S. government has recently suspended export licenses for nuclear equipment suppliers selling to China’s power plants, according to sources familiar with the situation, marking a significant escalation in the ongoing trade war between the two countries.

These suspensions, issued by the U.S. Department of Commerce, target parts and equipment critical for nuclear power plant operations. The move is part of broader export restrictions imposed over the past two weeks on various companies as Washington shifts from tariff negotiations toward restricting supply chains linked to China.

The suspensions impact major U.S. nuclear equipment suppliers, including Westinghouse—whose technology powers over 400 reactors worldwide—and Emerson, a provider of nuclear industry measurement tools. These restrictions are estimated to affect hundreds of millions of dollars in business.

The U.S. and China had agreed on a 90-day truce on tariffs starting May 12, but tensions quickly resurfaced. The U.S. accuses China of reneging on rare earth element agreements, while China criticizes the U.S. for abusing export controls, notably concerning Huawei’s AI chips. A new round of talks between President Donald Trump and President Xi Jinping was scheduled for June 9 to address these issues.

In addition to nuclear equipment, the U.S. has imposed new export license requirements on hydraulic fluids suppliers, aerospace companies like GE Aerospace (jet engines for China’s COMAC aircraft), and ethane shipments. Houston-based Enterprise Product Partners reported delays in approval for ethane cargoes to China due to the new licensing rules.

China, for its part, insists it is honoring the Geneva agreement and calls on the U.S. to lift its restrictive measures. The Chinese Embassy emphasized that its rare earth export controls follow global norms and are not targeted specifically at any country.

The ongoing export curbs come amid China’s restrictions on critical metals, which have disrupted global supply chains, particularly affecting U.S. automakers. Although China has granted temporary export licenses for rare earths to U.S. automakers, the situation remains volatile.

It remains unclear how long the U.S. export license suspensions will last or whether they will be reversed following diplomatic discussions.