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China Slams U.S. for ‘Abusing’ Export Controls Over Huawei AI Chip Guidance

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China has sharply criticized the United States for what it called the “abuse of export control measures”, following new U.S. guidance warning companies against using Huawei’s Ascend AI chips. The Chinese Ministry of Commerce said the move threatens the stability of global semiconductor supply chains and vowed to take action to protect the rights of its domestic companies.

At a press conference on Thursday, Commerce Ministry spokesperson He Yongqian urged Washington to “correct its practices” and accused the U.S. of targeting Chinese tech firms unfairly.

Background:

  • On Tuesday, the U.S. Commerce Department’s Bureau of Industry and Security (BIS) issued new guidance stating that companies using Huawei’s Ascend chips—the firm’s most advanced AI semiconductors—risk violating U.S. export controls.

  • These chips are produced by Huawei, a Shenzhen-based tech giant already subject to sweeping U.S. restrictions, and are seen as direct competitors to products from American chipmakers like Nvidia in the Chinese AI market.

China’s Reaction:

The Chinese government views the BIS warning as a deliberate attempt to suppress China’s tech advancement and influence in artificial intelligence. The Ministry emphasized that it will take “necessary measures” to safeguard the legitimate interests of Chinese enterprises.

The dispute underscores growing U.S.–China tensions over semiconductor technology and AI dominance, with Washington seeking to restrict China’s access to critical hardware and Beijing accusing the U.S. of weaponizing trade rules to stifle competition.

This development also comes as the global tech industry becomes increasingly fragmented, with countries pursuing “chip sovereignty” strategies to reduce reliance on foreign suppliers.

China’s SMIC Reports Strong Q1 Profit Surge but Warns of Cloudy Outlook Amid Tariffs and Yield Risks

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Semiconductor Manufacturing International Corp (SMIC) posted a strong financial performance in the first quarter, with profit surging 162% to $188 million and revenue rising 28% year-over-year, driven partly by rush orders from U.S. clients seeking to preempt newly imposed tariffs. However, despite the gains, the results missed analyst expectations, and SMIC’s Hong Kong-listed shares dropped 6.8% following a cautious Q2 forecast.

SMIC, China’s largest chip foundry, said it expects revenue in the second quarter to decline by as much as 6%, citing potential challenges from lower production yields as the company integrates new manufacturing equipment.

Key Financials (Q1 2025):

  • Profit attributable to shareholders: $188 million (vs. $222.4M LSEG estimate)

  • Year-over-year profit growth: +162%

  • Revenue growth: +28%

  • U.S. customer contribution: 12.6% of revenue (up from 8.9% in Q4 2024)

Tariff Impact and Industry Risks:
Co-CEO Zhao Haijun acknowledged the escalating U.S.-China trade tensions, noting that although the current impact is limited—thanks to tariff exemptions and a diversified supply chain—uncertainty looms for the second half of the year.

“If customers cut back purchases due to price increases, the sector could face a hard landing,” Zhao warned.

The company remains largely focused on legacy chips for consumer electronics and home appliances, while advanced chips, such as those powering Huawei smartphones, make up a very small portion of its business. SMIC has not confirmed any production ties to Huawei.

Broader Policy Context:

  • The Trump administration in April approved tariff exclusions on selected Chinese electronics including smartphones, computers, and memory chips, partially easing import pressures for U.S. firms.

  • Meanwhile, Chinese authorities have granted exemptions on some semiconductor imports and are in active talks with the domestic chip sector to mitigate the trade war’s impact.

Despite its strong Q1, SMIC’s outlook reflects the fragility of the global semiconductor supply chain in a climate of geopolitical tension, policy shifts, and technological transition—especially as it scales new equipment and process nodes.

H3C Warns of Nvidia AI Chip Shortage as Chinese Demand Surges

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One of China’s top server manufacturers, H3C, has reportedly warned of a looming shortage of Nvidia’s H20 AI chip—the most advanced processor currently available for sale in China under U.S. export rules. The notice, seen by Reuters, indicates rising concerns about disruptions in the international supply chain and signals possible obstacles for China’s AI development ambitions.

According to the document dated Tuesday, H3C informed clients that existing inventories of the H20 chip are “nearly depleted,” with new shipments only expected around mid-April. The notice blamed geopolitical tensions and raw material disruptions for the uncertainty. It also highlighted challenges in future supply planning beyond April 20 due to changes in shipping routes, production complications, and evolving policy environments.

Shortly after publication, Nvidia declined to comment, and H3C issued a clarification stating that “neither the company nor any of its departments have issued this notice or its related content.” However, industry sources confirmed that the chip is becoming increasingly difficult to obtain.

. AI Boom Driving Surging Demand
Demand for the H20 has sharply risen since January, driven by the popularity of Chinese startup DeepSeek’s cost-efficient AI models. Major Chinese tech giants such as Tencent, Alibaba, and ByteDance have ramped up orders in response, according to previous reporting by Reuters.

An anonymous distributor told Reuters that despite prior assurances about availability, many buyers were ultimately told the chips had already been sold at higher prices. “We were told the chips would be available, but when it came time to actually purchase them, we were informed they had already been sold at higher prices,” the source said.

. Geopolitical Pressures and U.S. Export Controls
The H20 chip was specifically designed by Nvidia to comply with tightened U.S. export restrictions implemented in October 2023. These rules ban the sale of the company’s most powerful chips—such as the A100 and H100—to China over national security concerns. The U.S. believes advanced AI chips could potentially be used to bolster China’s military capabilities.

Despite these restrictions, Nvidia is believed to have shipped around 1 million units of the H20 to China in 2024, generating over $12 billion in revenue.

Washington is also reportedly considering further limitations on even these lower-tier chips, raising the risk of additional constraints on China’s access to cutting-edge AI technologies.

. China’s Response and Domestic Alternatives
H3C is one of Nvidia’s key OEM partners in China, alongside Inspur, Lenovo, and xFusion—a spinoff from Huawei focused on x86 servers. The looming shortage could accelerate China’s efforts to develop and adopt domestic alternatives such as Huawei’s Ascend chips and Cambricon’s AI processors.

H3C’s internal communication reportedly emphasized a “profit-first” distribution model for upcoming chip deliveries, favoring long-term, high-margin customers. This signals that the chip shortage could hit smaller AI startups and new entrants the hardest, potentially reshaping China’s fast-evolving AI ecosystem.