China's state media have praised some U.S. firms for "strong collaboration" - commentary that comes amid fears of a trade war and is reminiscent of how tensions with the U.S. were covered by Chinese newspapers during Donald Trump's first presidency.

While China could offset American tariffs by letting its currency fall, that might endanger Beijing’s recent efforts to stabilize the economy.

Trump on Monday threatened an additional tariff of 10 percent unless China halts the flow of Fentanyl precursors.

BEIJING, Nov 27 (Reuters) - China's state media warned U.S. President-elect Donald Trump his pledge to slap additional tariffs on Chinese goods over fentanyl flows could drag the world's top two economies into a mutually destructive tariff war.