002326、600884提前涨停，什么情况？

Group 1: Yongtai Technology (永太科技) - Yongtai Technology plans to acquire a 25% stake in Yongtai Gaoxin from CATL through a share issuance and raise matching funds, with CATL becoming a shareholder post-transaction [1] - The stock of Yongtai Technology has been suspended from trading since February 9, with a market capitalization of 26.6 billion yuan as of February 6 [1] - The company expects to disclose the transaction plan within 10 trading days, by March 3, and anticipates a revenue of 5 to 5.5 billion yuan in 2025, despite a projected net loss of 25.6 million to 48.6 million yuan [1] Group 2: Shanshan Co., Ltd. (杉杉股份) - Shanshan Co., Ltd. has signed a restructuring investment agreement that will change its controlling shareholder to Anhui Wanwei Group, with the actual controller becoming the Anhui Provincial State-owned Assets Supervision and Administration Commission [2] - The stock of Shanshan Co., Ltd. also hit the daily limit up on February 6, with a total market capitalization of 32.32 billion yuan [3] - The company expects a net profit of 400 million to 600 million yuan in 2025, indicating a turnaround from previous losses [4]