凯众股份实控人变更为杨建刚、侯振坤

Group 1 - The actual controllers of the company have changed from four individuals to two individuals following the board re-election on September 22, 2025 [1] - Yang Jiangang and Hou Zhenkun will continue to serve as the chairman and general manager of the company, respectively [1] - A new "Joint Action Agreement" has been signed by Yang Jiangang and Hou Zhenkun, indicating their continued collaboration [1]