Prognosis

Code Words, Chaos, Sky-High Prices in China’s Mask Market

  • Quality concerns force U.S. buyers to adopt new methods
  • Chinese firms make up 90% of new entries on FDA registry
3M N95 particulate respiratorsPhotographer: Justin Chin/Bloomberg
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Desperate to find a new supply of protective face masks, executives at an American health-care services company last month began poring over videos shot inside Chinese factories -- and listening closely for gibberish.