PET铜箔板块盘中下挫，铜冠铜箔跌近10%

Group 1 - The PET copper foil sector experienced a significant decline, with Cuprum Copper Foil dropping nearly 10% [1] - Yinglian Co. saw a decrease of nearly 8%, while several other companies, including Zhongyi Technology, Defu Technology, Longyang Electronics, and Jingjia Co., all fell over 5% [1] - Yuanchen Technology and other firms also followed the downward trend [1]