Trade talks between China and the United States this week were extensive and helped establish a foundation for the resolution of each others' concerns, China's commerce ministry said on Thursday, but gave no details on the issues at stake.

The three-day talks in Beijing that wrapped up on Wednesday were the first face-to-face negotiations since U.S. President Donald Trump and his Chinese counterpart Xi Jinping met in Buenos Aires in December and agreed on a 90-day truce in a trade war that has disrupted the flow of hundreds of billions of dollars of goods.

The two sides "held extensive, deep and thorough exchanges on trade and structural issues of common concern, which promoted mutual understanding and established a foundation for the resolution of each others' concerns," the Chinese commerce ministry said in a brief statement.