[PCB concept rebounded in shock, Sihui Fushi rose by more than 10%] On September 10th, the PCB concept rebounded in shock during the day, Sihui Fushi rose by more than 10%, Jinan Guoji approached the daily limit during the session, and Welgo, Hongshida, Yihao New Materials, and Ultrasonic Electronics were among the top gainers. In terms of news, at the end of August, Kingboard Laminated Board issued its seventh price increase letter this year: FR-4 copper-clad laminates will increase by 10%, prepregs will be adjusted according to specifications, and thin cloth will increase by up to 20%. Later, Panasonic announced that it would raise copper-clad laminate prices from September 1, with some products increasing by up to 30%; Nanya Plastics followed suit, increasing by 20% to 25%.