Yuliangsheng starts mass-producing China's first DUV scanner

A Chinese-built immersion DUV scanner reaching a real customer floor is the sort of story that gets over-hyped every six months, but this one has a specific fingerprint. The Information reported that Shanghai Yuliangsheng, a startup with ties to Huawei and to the SiCarrier equipment group, has started mass-producing an immersion DUV lithography tool, with SMIC trialing the machine since September 2025 and eyeing active mass production at the foundry as early as 2027.

The technical envelope, as reported, is 28nm-class in single exposure. With multi-patterning it could reach 7nm, and in extreme cases 5nm at lower yields, according to a summary of the reporting by Tom's Hardware. That range matters, because it lands in the same node band where a lot of the chips that actually ship inside AI accelerators and networking gear get made, and it defines the ceiling of what China can plausibly do without ASML for the next several years.

The honest caveat is that this is a scanner at the very beginning of its production life, not a qualified fab workhorse. Most components are domestic but some parts are still imported, so the supply chain is not fully sovereign. The reporting also compares the machine's design envelope, generously, to ASML's Twinscan NXT:1950i from 2008, which was originally aimed at 32nm-class work, while ASML's own NXT:2000i for advanced fabrication is described as generations ahead. Getting from a September pilot at SMIC to a stable, high-yield line by 2027 is a genuinely hard engineering leap.

What the reporting doesn't give you is throughput or wafer yield on the pilot line, a clean list of which components are still foreign-sourced, or a credible roadmap from Yuliangsheng to a modern NXT:2000i-class scanner. Take the mass-production framing as reported, not settled.

The forward-looking part is who this helps and when. If Yuliangsheng holds to the 2027 target, SMIC gets a domestic option for its mature-node and multi-patterned advanced flows, which is exactly the capacity where Chinese chip ambitions have been most pinched by export controls. ASML's Chinese revenue is safe for this cycle, but the export-control leverage curve past 2027 looks materially different if a homegrown scanner is running in even one Chinese fab at real production volume.