China's chip-equipment push starts to weigh on Japanese suppliers

China’s rapid build-out of a domestic semiconductor equipment ecosystem is triggering structural shifts in global supply chains. The 12% year-over-year revenue decline among five major Japanese suppliers isn’t cyclical—it signals that local substitution has crossed a critical threshold. In mid-tier processes like etching, cleaning, and thin-film deposition, Chinese vendors such as Naura and AMEC now achieve over 80% localization, forcing Japanese peers into defensive pricing. Soaring compliance costs—driven by overlapping U.S. export controls and Chinese countermeasures—further erode margins. Expect Tokyo Electron and SCREEN to accelerate capacity shifts to Southeast Asia and deepen ties with Korean and Taiwan, China customers. Over the next 12–24 months, Japanese market share in China could shrink another 5–8 percentage points, while Chinese equipment makers validate full-stack 28nm capability as a springboard toward 14nm. This isn’t decoupling—it’s rebalancing under the new doctrine of technological sovereignty.