BEIJING, Aug. 23 (Xinhua) -- China's tariffs on imported products from the United States worth about 16 billion U.S. dollars took effect at 12:01 p.m. Thursday.

In response to a U.S. tariff move against Chinese products, China decided to impose additional duties of 25 percent on U.S. products, according to a statement of the Customs Tariff Commission of the State Council.