云南铜业：聘任刘八妹为公司证券事务代表

Group 1 - Yunnan Copper announced a change in its securities representative, with Sun Ping stepping down and Liu Bamei appointed to the role, effective from the board meeting approval until the end of the current board's term [1] - For the first half of 2025, Yunnan Copper's revenue composition is 75.44% from industrial and non-trade income, and 24.56% from trade income [1] Group 2 - As of the report, Yunnan Copper's market capitalization is 36 billion yuan [2]