同仁堂国药(03613.HK)：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 Guo Yao (03613.HK) due to the retirement of Gu Haiou [1] - Gu Haiou will retire as Executive Director, Chairman of the Board, and Authorized Representative effective September 4, 2025 [1] - Yan Han has been appointed as the new Chairman of the Board, while Le Zheng has been appointed as the Authorized Representative, both effective from the same date [1]