BEIJING—Factories that make the world’s smartphones, toys and other goods are struggling to reopen after a virus outbreak idled China’s economy. But even with the ruling Communist Party promising help, companies and economists say it may be months before production is back to normal.
The problem is supply chains—the thousands of companies that provide components, from auto parts to zippers to microchips. China’s are famously nimble and resourceful, but they lack raw materials and workers after the most intensive anti-disease measures ever imposed closed factories, cut off most access to cities with more than 60 million people and imposed travel curbs.
