An American business group said that Chinese officials had been surveying companies about American products that are crucial to their supply chains.

Levies on certain U.S.-made microchips have been dropped, importers say. Meanwhile, China has denied President Trump’s claims that talks to reduce tariffs are happening.

China is considering exempting some U.S. imports from its 125% tariffs and is asking businesses to provide lists of goods that could be eligible in the biggest sign yet that Beijing is worried about the economic fallout from its trade war with Washington.