The maker of N95 masks is accusing an Amazon seller of charging 20 times the retail price amid the coronavirus crisis (MMM)

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· *3M is accusing an Amazon seller of hiking the cost of its masks by as much as 20 times while  protective medical equipment was in short-supply amid the coronavirus pandemic.*
· *The company has filed 12 such lawsuits as part of ongoing efforts to combat fraud, it said. *
· *Mao Yu, the defendant of Monday's...