China's DUV lithography breakthrough slams ASML and peers 7% lower
A Shanghai state-backed firm began mass‑producing homegrown deep‑ultraviolet lithography tools, aiming for five units this year and twenty next. The news sparked a synchronized sell‑off, pulling ASML, Applied Materials, Lam Research and KLA down 5‑7% as investors fear China's advance could undercut U.S. export restrictions.