The tariffs add a new front to a trade war largely driven by Donald Trump's announcement of tariffs on Canada, Mexico and China and threats of protectionist measures on other nations.

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Beijing, which set steep duties on canola, peas and pork, wants Canada and Mexico to resist U.S. pressure to raise tariffs on Chinese goods.

China announced tariffs on Canadian agricultural and food products on Saturday in retaliation for October's decision to impose duties on Chinese-made electric vehicles, steel and aluminium. The Chinese commerce ministry said a 100 per cent tariff would be placed on Canadian rapeseed oil,

The president has launched a trade war seeking to quell the flow of illegal immigrants and the illegal trafficking of drugs and rebalance trade.

Zhengzhou Exchange on Tuesday raised the trading margin requirements for some rapeseed meal futures contracts to 9% from 7% after Beijing's 100% tariff on Canadian imports triggered a two-day rally that pushed prices to a five-month high.

HALIFAX — China’s intent to slap 25 per cent tariffs on Canadian seafood products adds another layer of uncertainty to an industry already threatened by U.S. duties, say sector representatives in Atlantic Canada.

China has announced imposing retaliatory tariffs on some Canadian goods as a global trade war looms. Beijing will impose 100% tariffs on rapeseed oil, oil cakes, and peas. It will also impose a 25% import levy on aquatic products and pork from Canada from 20 March.

Starting 20 March, imported canola oil, oil cakes and peas from Canada will face a 100% tariff from China, while aquatic products and pork will incur a 25% tariff.