A-share PCB stocks diverged intraday: Jin'an Guoji hit the daily limit;
Hongchang Electronics, Mankun Technology, Yidun Electronics, Mingyang Circuit
and Huazheng New Materials advanced. Oukeyi tumbled nearly 17%, Shenghong
Technology fell over 12%, Wanlang Magnetic Plastics dropped more than 9%, and
Fangbang Co. declined.