华润燃气(01193.HK)：欧启贤获委任为公司秘书及授权代表

Group 1 - The core announcement is that Zheng Guiyu has resigned as the company secretary and authorized representative of China Resources Gas (01193.HK) [1] - Ou Qixian has been appointed as the new company secretary and authorized representative, effective from December 19, 2025 [1]