Shares of Chinese power equipment manufacturers declined sharply following a new U.S. executive order restricting certain foreign-made grid equipment and related software from use in the United States. The move, signed by President Donald Trump on August 27, aims to address national security concerns by barring the purchase or installation of specific bulk-power products produced abroad.

On August 28, Sungrow Power Supply, a leading Chinese inverter producer, experienced a 12.24 percent drop in its stock price. Meanwhile, Sieyuan Electric, listed on Shenzhen’s main board where price fluctuations are limited to 10 percent per day, reached its maximum allowable decline. By the close of trading, Sieyuan’s shares had fallen 6.7 percent to 143.18 yuan, with Sungrow ending down 1.2 percent at 97.69 yuan.

Despite the steep market reaction, some analysts suggest the sell-off may be disproportionate to the actual long-term impact of the U.S. restrictions. Zhou Mi, a researcher at the Chinese Academy of International Trade and Economic Cooperation under China’s Ministry of Commerce, noted that while the order affects numerous companies, its practical consequences might be less severe than investors anticipate.

Zhou emphasized that the enforcement of the ban will play a crucial role in shaping outcomes. He pointed out that U.S. authorities face challenges in implementing such restrictions fully, as the domestic economy and end users depend on certain foreign equipment that cannot easily be replaced. Drawing parallels to previous limitations placed on drone technology, Zhou said it is difficult for American users to abruptly switch away from existing foreign-made infrastructure.

“The market sentiment has at times exaggerated the actual impact,” Zhou said, adding that the real effects will depend on how strictly the U.S. government enforces the order and manages its broader economic implications.

The executive order's broader intent is to safeguard U.S. critical infrastructure from potential vulnerabilities associated with foreign technology. However, uncertainties remain regarding which companies will be directly targeted and how the trade restrictions will be applied over time.

Chinese manufacturers also maintain that they may compensate for lost access to the U.S. market by expanding into other regions. Given the global nature of the power equipment sector, shifts in market dynamics are expected as companies adjust to evolving trade and regulatory environments.

Overall, while the U.S. ban has triggered immediate declines in Chinese power gear stocks, the longer-term consequences are yet to become fully clear, dependent largely on enforcement measures and the ability of affected firms to adapt.