Factbox - Impact of U.S.-China trade tariffs on U.S. companies

FILE PHOTO - Shipping containers are seen at the port in Shanghai, China April 10, 2018. REUTERS/Aly Song/File Photo

(Reuters) - U.S. companies are putting in place measures to cushion the impact of escalating trade tensions between the United States and China.

The world's two largest economies have already imposed tariffs on $34 billion worth of each other's imports.