WASHINGTON (Reuters) -The Federal Communications Commission on Wednesday voted to tighten restrictions on telecommunications equipment made by Chinese companies deemed national security risks, the latest in a series of U.S. actions targeting Beijing.

The U.S. telecom regulator previously named companies including Huawei, ZTE (Shenzhen:000063), China Mobile and China Telecom to the so-called "Covered List," which bars the FCC from authorizing the import or sale of new equipment from those companies. The FCC voted 3-0 to prohibit authorization of devices containing component parts from companies on the list and authorize the agency to prohibit the sale of previously authorized Covered List equipment in specific cases.