PCB stocks lead declines at open; Mankun Technology falls nearly 10%

The breadth of the selling matters more than any single name: a near-10% drop at Mankun alongside more than 5% declines across Aohong, Dongshan, Mingyang, Shengyi and Jingwang points to a sector-wide repricing rather than an isolated miss. PCB names sit close to the hardware supply chain that RWA and tokenization narratives often lean on, so weakness here reads as a sentiment signal for the broader electronics complex. The open question is whether this is a one-session flush or the start of a deeper de-rating, and whether the selling spreads beyond PCB into adjacent components.