
US officials confronted ASML Holding (AMS:ASML) over allegations that one restricted lithography machine entered China.
These high-tech systems are typically banned from shipment to China under export restrictions established during the first Trump administration.
A corporate spokesperson stated that the manufacturer has never distributed an extreme ultraviolet lithography system to Chinese buyers.
Government authorities claimed to possess evidence of related equipment exports but declined to provide public proof, citing information sensitivity.
Following the announcement, ASML's share price was down 2.3% in Amsterdam trading.
The manufacturer noted that its specialized chipmaking machines are produced in limited quantities and require continuous upkeep by staff.
Despite the recent regulatory friction, the company's shares have advanced by about 80% since the start of the year.