Zheng Quan Shi Bao Wang·2025-12-17 09:44Group 1 - The PET copper foil concept increased by 2.73%, ranking 9th among concept sectors, with 39 stocks rising, including Jiangnan New Materials hitting the daily limit, and other notable gainers like Jiao Cheng Ultrasonic and Defu Technology rising by 13.54%, 12.53%, and 8.92% respectively [1] - The PET copper foil sector saw a net inflow of 318 million yuan, with 18 stocks receiving net inflows, and 7 stocks attracting over 30 million yuan, led by Dongcai Technology with a net inflow of 155 million yuan [2][3] - Jiangnan New Materials, Liyuanheng, and Hengtong Holdings had the highest net inflow ratios at 21.72%, 10.87%, and 10.15% respectively [3] Group 2 - The top gainers in the PET copper foil sector included Dongcai Technology with an 8.92% increase, Defu Technology with a 12.53% increase, and Jiangnan New Materials with a 10% increase [3] - The trading volume and turnover rates for key stocks in the PET copper foil sector were significant, with Jiangnan New Materials having a turnover rate of 15.78% and Dongcai Technology at 11.77% [3] - The overall market performance showed a mixed trend, with some sectors like CPO and copper cable high-speed connections performing well, while others like the Hainan Free Trade Zone and horse racing concepts faced declines [2]