China AI ObservatoryDevelopment focusreported
Stable high-power light sources for domestic lithography
As of 2026-09-11Financial Times · Huawei and the domestic lithography supply chain (source)Company dossier · Reviewed 2026-09-11
RSLaser 北京科益虹源
Lithography light-source supplier to watch.
What the evidence says
DUV source progress should not be relabeled as a complete EUV source replacement.
Financial Times · Huawei and the domestic lithography supply chain (source)Critical facts
Company news
Timeline →reported
Domestic lithography effort extends across components
Reporting identifies Yuliangsheng, Zhiqi, and RSLaser in the local supply-chain effort.
Why it matters. The next meaningful gate is sustained fab qualification.
Financial Times · Huawei and the domestic lithography supply chain (source)