In this Sept. 17, 2020, file photo, visitors wearing mask to protect from the coronavirus walk past a 5G sign at the China Beijing International High Tech Expo in Beijing, China. (AP Photo/Ng Han Guan, File)
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In this Sept. 17, 2020, file photo, visitors wearing mask to protect from the coronavirus walk past a 5G sign at the China Beijing International High Tech Expo in Beijing, China. (AP Photo/Ng Han Guan, File)
