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.

A series of swipes at American companies show how China could take the initiative in a new trade war, using its economic dominance to exact pain.

Economists worry that Trump's tariff plan will raise the prices of a range of imported goods, from cars to electronics.