Share this on Twitter Share this on Facebook Share this on LinkedIn Share this on Sina Weibo Share this on Wechat Share this on LinkedIn Hikvision video surveillance camera.Credit: Karolis Kavolelis, Shutterstock Alarmed by reports of cyberattacks and the growing threat China poses to national security, the United States Congress passed a law in 2018 that would ban any facility operated by the U.S. government or one of its contractors from using equipment made by five state-backed Chinese technology firms: Huawei, ZTE, Dahua, Hytera and a company called Hikvision, the world’s biggest maker of security and video surveillance cameras. According to the National Defense Authorization Act, all U.S. government facilities — including military bases — are required to rid themselves of any device made by these five firms within a year, or by August 2019. And then, a year later, by August 2020, the government said that all contractors have to rid their premises of equipment made by the five Chinese firms, and attest to that in writing, if they want to conduct business with the government. If that wasn’t enough, in 2019, the U.S. Commerce Department added three of the firms (Huawei, Dahua aSubscribe or login to read the rest. Subscribers get full access to: Exclusive longform investigative journalism, Q&As, news and analysis, and data on Chinese business elites and corporations. We publish China scoops you won't find anywhere else. A weekly curated reading list on China from David Barboza, Pulitzer Prize-winning former Shanghai correspondent for The New York Times. A daily roundup of China finance, business and economics headlines. We offer discounts for groups, institutions and students. Go to our Subscriptions page for details.