US tells ASML it’s concerned one of its chipmaking tools may be in China: report

U.S. Commerce Secretary Howard Lutnick has told ASML that Washington is concerned that one of its top chipmaking machines may have found its way to China in violation of U.S.-led export restrictions, Bloomberg News reported ‌on Thursday.

Lutnick ⁠expressed ⁠these concerns to senior leaders of the Dutch firm in ​a series of meetings, the report said.

ASML has pushed back ​against those concerns, noting that EUV, or extreme ultraviolet, lithography tools used to print tiny chip ​circuits are made in small ⁠quantities and ‌require constant upkeep from ASML ​employees, according ​to the report.