South Korea has found rising attempts to disguise foreign products as Korean exports, mostly from China, to avoid U.S. President Donald Trump's sweeping tariffs, its customs agency said on Monday.

South Korea and the US will kick off trade negotiations this week as the Asian export powerhouse seeks to persuade Donald Trump’s administration to ease the punitive levies that are starting to bite the economy.

The effects of President Trump’s new tariffs are starting to be felt across the world, preliminary South Korean trade data suggest, as Seoul prepares to begin negotiations with Washington.