*ST SITONG: Deputy General Managers Cai Zhenmao, Cai Zhenpeng, and Cai Zhenfeng have resigned from their positions for personal reasons.*

ST SITONG announced that the company's board of directors recently received written resignation reports from the deputy general managers Cai Zhenmao, Cai Zhenpeng, and Cai Zhenfeng. The three individuals applied to resign from their positions as deputy general managers and all positions in subordinate companies for personal reasons.