China's trade surplus with the United States for December stood at $23.18 billion, a Reuters calculation based on Chinese customs data showed on Tuesday, narrowing slightly from the $24.6 billion surplus posted for November.

For the full year, China posted a $295.8 billion trade surplus with the United States, down from $323.33 billion in 2018, according to Reuters calculations.

Customs said China's total trade with the United States fell 14.6% in 2019, with exports dropping 12.5% and imports slipping 20.9%.