The Biden administration has banned approvals of new telecommunications equipment from China's Huawei Technologies (HWT.UL) and ZTE (000063.SZ) because they pose "an unacceptable risk" to U.S. national security.

The five-member Federal Communications Commission said Friday it has voted unanimously to adopt new rules that will block the importation or sale of certain technology products that pose security risks to U.S. critical infrastructure. It's the latest in a years-long escalation of U.S. restrictions of Chinese technology that began with former President Donald Trump and has continued under President Joe Biden's administration.

"The FCC is committed to protecting our national security by ensuring that untrustworthy communications equipment is not authorized for use within our borders, and we are continuing that work here," said FCC Chairwoman Jessica Rosenworcel, a Democrat, in a prepared statement.

Along with Huawei and ZTE, the order affects products made by companies such as Hikvision and Dahua, makers of widely used video surveillance cameras.

The FCC's order applies to future authorizations of equipment, though the agency leaves open the possibility it could revoke previous authorizations.

The U.S. Federal Communications Commission said on Friday it had adopted the final rules, which also bar the sale or import of equipment made by Chinese surveillance equipment maker Dahua Technology Co (002236.SZ), video surveillance firm Hangzhou Hikvision Digital Technology Co Ltd (002415.SZ) and telecoms firm Hytera Communications Corp Ltd (002583.SZ).

The move represents Washington's latest crackdown on the Chinese tech giants amid fears that Beijing could use them to spy on Americans.