Trump’s Trade War Spares an Industry Europe Rules: Hearing Aids

Just northwest of Copenhagen, a cluster of small towns surrounded by trees and lakes is home to three of the world’s biggest hearing-aid makers. The area’s outsize control of the market, which has helped Denmark earn the moniker “Silicon Valley of Sound,” seems set to endure after devices for chronic disabilities were among the rare segments to escape the Trump tariff burn.

An ecosystem developed over more than a century has given the three Danish companies Demant A/S, GN Store Nord A/Sand WS Audiology A/S — together with their Swiss rival Sonova Holding AG — a quasi-monopoly on the market for devices that help people ...