European companies operating in China say the market has become increasingly challenging because of weak economic demand and opaque government rules on business.

China’s halt this month on exports of magnets containing heavy rare earth metals has affected Tesla’s plans to manufacture Optimus robots.

Enormous investments in factory equipment and artificial intelligence are giving China an edge in car manufacturing and other industries.

CATL, the world’s largest maker of batteries for electric vehicles, described breakthroughs that could make E.V.s more competitive with gasoline-powered cars.

The United States accounted for only 3 percent of China’s natural gas imports last year. Those purchases could now dry up entirely in the trade...

China seized mines and built factories. Japan took note and invested in Australia. But the United States did little despite concerns about control of supplies.

The economy grew steadily from January through March, but U.S. tariffs pose a risk for China in the coming weeks and months.

Beijing has suspended exports of certain rare earth minerals and magnets that are crucial for the world’s car, semiconductor and aerospace industries.

Small factories with tiny profit margins have played a central role in China’s international competitiveness. Many could now face disaster.

Beijing announced a new round of 50 percent tariffs in response to President Trump’s latest levies as the trade conflict between the superpowers escalates.