Canada says it will ban two of China's biggest telecoms equipment makers from working on its 5G phone networks, BBC News reports.
The restrictions against Huawei and ZTE were announced by the country's industry minister on Thursday.
Francois-Philippe Champagne says the move will improve Canada's mobile internet services and "protect the safety and security of Canadians".
Several nations - including the UK, US, Australia and New Zealand - have already put restrictions on the firms.
The four countries, along with Canada, make up an intelligence-sharing arrangement named 'Five Eyes'. It evolved during the Cold War as a mechanism for monitoring the Soviet Union and sharing classified information.
Canada's announcement was widely expected, as its allies had already barred Huawei and ZTE from their own high-speed networks.
Speaking to reporters in the Canadian capital of Ottawa, Mr Champagne said the decision came after "a full review by our security agencies and consultation with our closest allies".
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