Which company did China claim violated antimonopoly laws after their acquisition?

China claimed that Nvidia violated antimonopoly laws following its acquisition efforts, particularly relating to the company's proposed purchase of Arm Holdings. The Chinese regulatory authorities raised concerns that this acquisition could potentially stifle competition in the semiconductor industry, thereby harming domestic technology firms and innovation within the country. This claim reflects China's increasing scrutiny of foreign acquisitions and its enforcement of antitrust regulations, as the country aims to maintain a competitive market landscape for its own burgeoning tech sector.

The other companies listed, while significant players in the semiconductor industry, have not faced similar antimonopoly allegations from China regarding acquisitions in the same context as Nvidia's situation with Arm Holdings.