The PCB concept sector experienced a resurgence today, with notable gains across the board. Jiuri New Materials led the pack with a surge exceeding 16%, while Jiangnan New Materials hit its daily trading limit. Founder Technology climbed over 9%, Sunfull New Materials approached an 8% increase, and other notable players such as Shiyun Circuits, Yibo Technology, and Longqi Technology all registered gains of 5%.