China A-share PCB Concept Stocks Extend Rally, Guangzhou Broad Technology and Honghe Technology Hit Limit Up

The move is a momentum extension rather than a fresh catalyst: the PCB complex is trading as a single thematic block, with limit-up names and double-digit gainers pulling the broader group higher. What matters is whether the buying broadens beyond the leaders or stays concentrated in a handful of limit-up tickers, since that separates a durable sector re-rating from a short-lived chase. Watch whether the smaller gainers keep pace or fade once the limit-up names stop advancing.