东方材料：董事长许广彬因个人原因辞职

Group 1 - The chairman of the company, Xu Guangbin, has resigned from his position due to personal reasons [2] - Xu Guangbin also stepped down from his roles as the chairman of the Strategic Committee, member of the Nomination Committee, and member of the Compensation and Assessment Committee of the sixth board [2] - Despite his resignation from these positions, Xu Guangbin will continue to serve as a director of the company [2]