Explainer: China's rare earth supplies could be vital bargaining chip in U.S. trade war

Rare earth elements are used in a wide range of consumer products, from iPhones to electric car motors, as well as military jet engines, satellites and lasers. Rising tensions between the United States and China have sparked concerns that Beijing could use its dominant position as a supplier of rare earths for leverage in the trade war between the two global economic powers. WHAT ARE RARE EARTHS USED IN?

from https://news.yahoo.com/chinas-rare-earth-supplies-could-051617597.html