U.S.-China trade talks in London this week are expected to take up a series of disputes that have buffeted relations

After a round of talks in Geneva last month, the United States and China will sit down at the negotiating table in London on Monday to attempt to preserve a fragile truce on trade, despite simmering tensions.

Customs data released Monday showed total exports rose 4.8% in May from a year earlier, much lower than economists' forecasts and down sharply from an 8.1% jump in April.