The head of one of the world's top engineering groups has voiced support for China's antitrust investigations.

Uli Spiesshofer, chief executive officer of Swiss giant ABB Ltd, said that despite growing concerns internationally that China is targeting foreign companies in its antitrust inquiries, he congratulated Beijing on its actions to make the market more competitive.

"I do not share the same concerns," said Spiesshofer, speaking during the company's annual Capital Market Day briefing in London.