华特气体：董事长石平湘辞职，石思慧接任

Group 1 - The chairman of the company, Shi Pingxiang, has resigned due to age reasons and will no longer serve as chairman or the convenor of the board's strategic committee [1] - Shi Pingxiang will continue to serve as a director and a member of the board's strategic and nomination committees [1] - The company's vice chairman, Shi Sihui, has been elected as the new chairman, with a term lasting until the current board's term ends [1] - The change in chairmanship is not expected to adversely affect the company's normal operations and management [1]