A股PCB概念震荡回升，铜冠铜箔涨超10%创新高

Group 1 - The core viewpoint of the article highlights a significant increase in the stock prices of PCB-related companies following a price hike announcement by Resonac, a Japanese semiconductor materials manufacturer [1] - Copper Crown Copper Foil saw its stock price rise over 10%, reaching a historical high, while other companies such as Huibai New Materials, Jiangnan New Materials, Qiangda Circuit, Tianjin Printech, and Huazheng New Materials also experienced gains [1] - Resonac announced a price increase of over 30% for copper foil substrates (CCL) and adhesive films used in printed circuit boards (PCBs), effective from March 1 [1]