Core Viewpoint - The PCB sector has shown significant growth, with a 4.28% increase, ranking third among concept sectors, driven by strong performances from several stocks [1][2]. Group 1: Market Performance - As of August 15, the PCB concept saw 148 stocks rise, with notable gainers including Yidong Electronics, Zhongfu Circuit, and Jiuri New Materials, each hitting a 20% limit up [1]. - The top performers in the PCB sector included Yishitong, Tongguan Copper Foil, and Qiangrui Technology, with increases of 17.54%, 14.49%, and 12.74% respectively [1]. - Conversely, stocks like Dongshan Precision, Shenzhen South Circuit, and Dazhu Laser experienced declines of 5.06%, 2.86%, and 1.52% respectively [1]. Group 2: Capital Inflow - The PCB sector attracted a net inflow of 2.803 billion yuan, with 85 stocks receiving net inflows, and 14 stocks exceeding 100 million yuan in net inflow [2]. - The leading stock in terms of net capital inflow was Nord Shares, which saw an inflow of 662 million yuan, followed by Fangzheng Technology, Shengyi Technology, and International Composite Materials with inflows of 581 million yuan, 445 million yuan, and 319 million yuan respectively [2][3]. Group 3: Capital Flow Ratios - The highest net inflow ratios were observed in Nord Shares, Fangzheng Technology, and Hongchang Electronics, with ratios of 42.41%, 23.24%, and 22.19% respectively [3]. - Other notable stocks with significant inflow ratios included Zhongcai Technology and Tongyu New Materials, with ratios of 22.03% and 15.22% respectively [4].