设计总院：选举沈国栋为董事长

Group 1 - The company announced the resignation of its Chairman, Su Xinguo, due to work changes, along with two Vice Presidents, Chen Xiuhua and Xu Qiwen, who also resigned for similar reasons [1][1][1] - The company held its 26th meeting of the fourth board of directors on December 12, 2025, where it elected Shen Guodong as the new Chairman and legal representative, with a term lasting until the current board's term ends [1][1][1] Group 2 - The company convened the third meeting of the nomination committee on December 12, 2025, where it approved the proposal to appoint a new Vice President [2] - The company also held the 26th board meeting on the same day, approving the appointment of Wu Zhigang as Vice President, with a term lasting until the current board's term ends [2][2]