A timeline of U.S.-China trade battle

The world’s two biggest economies are locked in a trade battle that — so far — has resulted in tariffs announced on more than $100 billion in products produced by the United States and China.

Wednesday, the Chinese government proposed new tariffs on dozens of U.S. products, including airplanes, cars and soybeans, in retaliation for the Trump administration’s Tuesday announcement that the U.S. will target another $50 billion in Chinese goods.

The moves have been in the works for almost a year:

April 2017 — Trump launches investigation into steel imports.

August 2017 — Trump launches a second investigation, with a focus on alleged Chinese theft of U.S. intellectual property. It estimates the cost to the U.S. at $225 billion to $600 billion a year.

January 2018 U.S. announces a 30 percent tariff on imported solar panels, most from China, and taxes on large residential washing machines starting at 20 percent.

February 2018 Commerce Department proposes tariffs on steel and aluminum.

March 9, 2018 Trump follows through, taxing steel imports at 25 percent and imported aluminum at 10 percent.

April 2, 2018 China hits back and imposes tariffs on U.S. imports worth about $3 billion, including a 15 percent duty on 120 American products, including fruits, nuts, wine and steel pipes and a 25 percent tax on eight others, including recycled aluminum and pork.

April 3, 2018 The U.S. proposes a 25 percent tax on 1,300 Chinese goods from the aerospace, machinery and medical industries — worth about $50 billion.

April 4, 2018 The Chinese government announces retaliatory tariffs — 25 percent on a range of products from the U.S. including aircraft, automobiles, soybeans and chemicals — worth about $50 billion.