CALT Rocket: Yang Jie and Li Jian resign due to job adjustments.

Zhongtian Rocket Announcement: The Board of Directors of the company received the written resignation reports from Yang Jie and Li Jian on September 8, 2025. Yang Jie resigned from the position of director of the fourth board of directors, member of the board's strategic committee, and member of the board's compensation and evaluation committee due to a work adjustment, and will not hold any other positions in the company after resignation. Li Jian resigned from the position of director of the fourth board of directors, member of the board's strategic committee, and the company's general manager due to a work adjustment, and will not hold any other positions in the company after resignation. As of the disclosure date of this announcement, Yang Jie and Li Jian did not hold any shares of the company, the related work has been handed over, and their resignations will not affect the normal operation of the company. The Board of Directors will promptly complete the selection of a new general manager and the election of new directors.