A magnitude 7.0 earthquake off Taiwan’s eastern coast late on December 27 disrupted parts of the island’s semiconductor supply chain, after several wafer fabs reported damage to quartz furnace tubes critical to diffusion processes, according to industry sources. While no structural damage to factories was reported, the incident has sharpened market attention on recovery timelines at major chipmakers, including TSMC, Powerchip Semiconductor Manufacturing Corporation (PSMC), and Nanya Technology.