Yongding Group (600105.SH): The company does not directly produce controllable nuclear fusion devices.

Intelligent Financial News APP, Yongding Stock (600105.SH) announced that the company's stock price has deviated by 20% for three consecutive trading days on December 10th, 11th, and 12th, 2025. According to the relevant provisions of the Shanghai Stock Exchange trading rules, this situation constitutes abnormal fluctuations in stock trading. The company has noted that it has recently been listed as a concept stock related to controlled nuclear fusion. Upon self-inspection, the company's subsidiary East Superconducting Technology (Suzhou) Co., Ltd. (hereinafter referred to as "East Superconducting") mainly produces second-generation high-temperature superconducting tapes and superconducting application products, but does not directly manufacture controlled nuclear fusion devices. Its products are only used for the magnets of the winding device. The revenue generated by East Superconducting accounted for less than 1% of the company's total revenue from January to September 2025, and it operated at a loss, hence it will not have a significant impact on the company's performance.