Beijing on Wednesday announced it would ramp up its retaliatory tariffs on U.S. products to 84 percent, matching the increase the U.S. put into effect on Wednesday morning while enacting new sanctions on U.S. companies as well. After the Trump administration last week unveiled a new tariff regime that included 34 percent tariffs on Chinese goods, China announced it would hit imports from the U.S. with 34 percent duties. Then, Trump on Monday threatened to raise tariffs on China another...