ASML faces moat erosion now that China has a homegrown alternative to its machines. The Information reports a state-backed Shanghai company has started mass-producing DUV lithography tools. Chinese fabs stockpiling older DUV tools had become a major revenue driver, with China at 36% of sales in 2024 and 29% last year. Output is tiny, about five machines this year and maybe twenty next. But once a second supplier exists, the question shifts from "no alternative" to "for how long." x.com

