Behind the daily skirmishes over tariffs, the U.S. and China are gearing up for a longer-term battle between two very different systems of innovation. To win, America may need to start using some of its rival’s weapons.

Factory growth in major manufacturing hubs showed signs of cooling last month as companies braced for potential damage from rising global trade tensions while also grappling with accelerating inflation and a strong dollar.

De Beers, the diamond giant that for years has promoted gemstones as pricey and precious, said it will begin selling man-made diamonds that cost about a tenth of the price of a mined gem.

Airbus SE has seen widespread popularity for its newest A350 long-haul aircraft. But only one carrier, Singapore Airlines Ltd., has found the need for an ultra long-range version of the A350 that can fly almost 10,000 miles, from New York City to Southeast Asia—nonstop.