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.

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,

As China announces tariffs on some Canadian products — like seafood, pork and canola oil — industries on the Island worry about what kind of effect the threat will have on their goods. CBC's Taylor O'Brien reports.

Beijing has summoned Walmart for reportedly asking Chinese suppliers to swallow the tariff hikes imposed by the Trump administration, marking the latest salvo in the trade spat between the world’s two largest economies.

The world's largest retailer is clashing with China over the company's efforts to reduce the impact of President Trump's increased tariffs. Why it matters: Walmart — whose brand is inextricably linked to low prices — is trying to leverage its monumental size to mitigate its own costs from the billowing international trade war.