Chinese manufacturers of multilayer ceramic capacitors (MLCCs) – tiny components required in great numbers to regulate electrical flow in electronic devices – are riding a stock rally on the back of explosive first-half earnings, fuelled by insatiable global demand for artificial intelligence infrastructure. Shares of Shenzhen-listed Guangdong Fenghua Advanced Technology, one of the country’s leading producers of consumer-grade MLCCs, surged by the exchange-imposed 10 per cent daily limit on Wednesday morning. It marked the second time the stock hit the ceiling this week, capping a rally of more than 180 per cent so far this year. Its Hong Kong shares also rose 5 per cent on Wednesday. The sector’s rally comes as the rapid buildout of power-hungry AI data centres and computing clusters continues to drive high demand for high-capacitance MLCCs, creating supply constraints across the supply chain.