Guanghua Technology: Director Cai Wen was filed for suspected insider trading.

Guanghua Technology Announcement, Ms. Cai Wen, a director and senior executive of the company, received a "Notice of Filing" issued by the China Securities Regulatory Commission on March 31, 2026, deciding to file a case against her for suspected insider trading. This case investigation is a personal investigation of Ms. Cai Wen and is unrelated to the company's daily operations and business activities, and does not involve the trading of the company's stock. Ms. Cai Wen is currently still performing her duties normally in the company and has expressed her willingness to actively cooperate with the investigation by the China Securities Regulatory Commission. The company will continue to monitor the progress of the above-mentioned matters and fulfill its disclosure obligations in a timely manner.