U.S. officials called on Monday for "concrete action" from China to make good on its commitment to purchase $200 billion in additional U.S. goods and services in 2020 and 2021 under the "Phase 1" trade deal signed by former U.S. President Donald Trump.

The officials said Washington was losing patience with Beijing, which had "not shown real signs" in recent months that it would close the gap in the two-year purchase commitments that expired at the end of 2021.

The comments come a day before the U.S. government is due to release full-year trade data that analysts expect to show a significant shortfall in China's pledge to increase purchases of U.S. farm and manufactured goods, energy and services.