Port activity in Shanghai and Guangdong has sharply declined following the implementation of a 145% tariff imposed by President Donald Trump, triggering a ripple effect across China’s manufacturing and shipping sectors, according to reports from exporters and local officials, Breitbart reported.

Radio Free Asia (RFA) cited accounts from Chinese exporters and port officials on Saturday who reported that traffic has visibly slowed in China’s major port cities.

In some areas, factory production has reportedly “ground to a halt.”

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