China’s promise to delay its newest restrictions on the export of the rare earths that are crucial to many high-tech products for one year as part of a trade agreement creates an opportunity for the U.

China first tightened controls on seven rare earth minerals in April after Trump imposed tariffs on Chinese imports of up to 145 percent. Following a round of mostly positive trade talks, Beijing agreed to partially relax those measures, though U.S. and other importers continued to report ongoing delays.

Beijing is pledging to buy soybeans, delay rare-earth export controls and curb fentanyl — but questions remain over what the U.S. gave up in return.

U.S. President Donald Trump departed from South Korea on Thursday after a high-stakes meeting with Chinese President Xi Jinping that lowered the temperature on a simmering trade war.