According to the ultrasound electronic announcement, the cumulative deviation value of the company's stock price increase exceeded 20% for 3 consecutive trading days on September 14, September 15, and September 16, 2026, which is an abnormal fluctuation in stock trading. After verification, the company had no important matters that should have been disclosed but not disclosed, and the controlling shareholders and actual controllers did not trade the company's shares during the change period. The market rumor that “ultrasonic electronic high-frequency boards have passed Nvidia certification” is untrue. The company has no products supplied to Nvidia; the supporting PCBs for 800G and 1.6T optical modules are in the R&D follow-up stage, and have not yet been supplied on a large scale, and no corresponding revenue has been generated. There have been no major changes in the company's fundamentals, and investors are reminded to pay attention to investment risks.

According to the ultrasound electronic announcement, the cumulative deviation value of the company's stock price increase exceeded 20% for 3 consecutive trading days on September 14, September 15, and September 16, 2026, which is an abnormal fluctuation in stock trading. After verification, the company had no important matters that should have been disclosed but not disclosed, and the controlling shareholders and actual controllers did not trade the company's shares during the change period. The market rumor that “ultrasonic electronic high-frequency boards have passed Nvidia certification” is untrue. The company has no products supplied to Nvidia; the supporting PCBs for 800G and 1.6T optical modules are in the R&D follow-up stage, and have not yet been supplied on a large scale, and no corresponding revenue has been generated. There have been no major changes in the company's fundamentals, and investors are reminded to pay attention to investment risks.