High-energy environment: Director Sun Min increased his holding of 100,000 shares.

High-energy environment announcement: Sun Min, Director, Vice President, and Chief Financial Officer of the company, increased his shareholding by 100,000 shares through centralized bidding on the Shanghai Stock Exchange trading system on December 4, 2025, accounting for approximately 0.0066% of the total share capital of the company, with a total increase of 702,000 yuan. After the increase, Sun Min holds 100,000 shares of the company, with a shareholding ratio of 0.0066%. This increase does not trigger the obligation to report changes in equity and will not change the shareholder's identity.