同仁堂国药(03613)：严晗获委任为董事会主席

Group 1 - The core point of the article is the announcement of leadership changes at Tong Ren Tang Chinese Medicine (03613), with Gu Haiou retiring and new appointments being made [1] - Gu Haiou will retire as Executive Director and Chairman of the Board effective September 4, 2025, due to reaching retirement age [1] - Yan Han has been appointed as the new Chairman of the Board, effective September 4, 2025 [1] - Le Zheng has been appointed as the authorized representative of the company, effective September 4, 2025 [1]