力源科技：选举沈家雯女士为董事长

Group 1 - The core point of the article is the announcement of the election of Shen Jiawen as the chairperson of the board of directors of Liyuan Technology during the 23rd meeting of the fourth board of directors [2] Group 2 - The announcement was made on the evening of August 15 [2] - This marks a significant leadership change within the company [2] - The election reflects the company's governance structure and decision-making process [2]