[PCB concept opened actively, Jinan Guoji hit the daily limit] On October 28, PCB concept opened actively, Jinan Guoji hit the limit, and Nanya New Materials, Baoding Technology, Shengyi Technology, and Yihao New Materials opened higher. On the news, 10 listed companies in the PCB industry chain collectively released their third quarter reports. Among them, Nanya New Materials and Jinan Guoji’s third quarter net profit increased by more than 10 times. Nanya New Materials announced that its net profit in the third quarter was 990 million yuan, a year-on-year increase of 1,296%; Jinan Guoji announced that its third-quarter net profit was 1.158 billion yuan, a year-on-year increase of 1,031%; Ultrasonic Electronics announced that its third-quarter net profit was 239 million yuan, a year-on-year increase of 276.24%.