SHANGHAI—Multiple companies have suspended operations in one of China’s biggest and busiest manufacturing hubs as authorities double down to contain a COVID-19 outbreak, halting some production of goods from batteries and clothing to textile dyes and plastics.
Tens of thousands are in quarantine and some domestic flights have been suspended as a national health official said the outbreak in three cities—Ningbo, Shaoxing, and Hangzhou—was developing at a “relatively rapid” speed.
