In this Tuesday, Oct. 29, 2019, photo, visitors look at the surveillance cameras and services provided by China's telecoms equipment giant Huawei on display at the China Public Security Expo in Shenzhen, China's Guangdong province. The U.S. Department of Commerce has proposed requiring case-by-case approvals of all purchases of telecommunications equipment in a move likely to hit major Chinese suppliers like Huawei. (AP Photo/Andy Wong)
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