China’s printed circuit board (PCB) makers are embarking on a factory-building spree to feed demand fuelled by the global artificial intelligence boom, a rush that is expected to push their capital expenditure to a record high.In the first half of the year, more than 20 Chinese PCB companies – including Victory Giant Technology, WUS Printed Circuit, Shennan Circuits and Suzhou Dongshan Precision Manufacturing – disclosed aggressive capacity expansion plans.With major players committing...