U.S. Commerce Secretary Howard Lutnick said on Tuesday trade talks with China were going well as the two sides met for a second day in London, seeking a breakthrough on export controls that have threatened a fresh rupture between the superpowers.

LONDON (Reuters) -Top U.S. and Chinese officials will resume trade talks for a second day in London on Tuesday, hoping to secure a breakthrough over export controls for goods such as rare earths that have threatened a global supply chain shock and slower economic growth.

A new round of trade negotiations between the United States and China has started in London, with both sides trying to preserve a fragile truce brokered last month.