China in a tit-for-tat move has slapped sweeping export restrictions on dozens of US companies, including two critical minerals American firms, sparking fears of a trade clash between the global superpowers.

The move is seen as Beijing’s retaliation against Washington as last week the Pentagon blacklisted two dozen Chinese firms including Alibaba and Baidu. In response, China’s Commerce Ministry placed 10 US defense firms on a control........

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