A股PCB概念股集体下挫，大族数控跌9%

Group 1 - The A-share market saw a collective decline in PCB concept stocks, with notable drops in several companies [1] - Dazhu CNC experienced a decline of 9.09%, while Helitai fell by 8.77% [2] - Other companies such as Aikemi, Chongda Technology, and Guanghua Technology also reported significant decreases, with drops exceeding 7% [1][2] Group 2 - The total market capitalization of Dazhu CNC is 44.3 billion, and it has increased by 190.60% year-to-date [2] - Helitai's market capitalization stands at 24.9 billion, with a year-to-date increase of 39.33% [2] - Aikemi's market capitalization is approximately 48.13 billion, showing a year-to-date increase of 103.98% [2]