ASML EUV scanner''s core light source is from Cymer, an American company in San Diego, CA. Even Cymer was acquired by ASML, US Gov still has enough powwer to restrict ASML selling EUV scanner to China.
ASML's advanced DUV scanner: immersion ArF DUV scanner, still has technology from US. ASML had bought American company SVGL with certain condition.
感觉老美从急性脱钩转变为缓慢脱钩，但是脱钩的目标可能不变，原因是就像太阳能板，只要中国企业大举进入的邻域，企业的利润都将大幅缩减，美国受不了，欧洲也受不了。