* Richardson International registration to ship to China canceled
* Move coincides with China-Canada tensions over Huawei executive
* Canola shipments to China already facing slower clearing times
* Oilseeds, fruit, grain about 17 pct of Canada's China exports
By Dominique Patton and Rod Nickel
BEIJING/KABUL, March 5 (Reuters) - China has canceled Canadian agribusiness Richardson International Ltd's registration to ship canola to China, the company said on Tuesday, the latest sign of tensions between Ottawa and Beijing.
It was not immediately clear why exports to China by Richardson, the world's top importer of canola, had been halted.
Canada and China are locked in a dispute over trade and telecoms technology that has ensnared the chief financial officer of Huawei Technologies Ltd HWT.UL , the world's largest telecommunications equipment maker, who faces U.S. criminal charges. at China's General Administration of Customs did not immediately respond to requests for comment.
Richardson spokeswoman Hayley Johnson confirmed that China revoked the company's import permit for canola, after Reuters earlier reported a document listing approved shippers posted on the website of the Chinese customs administration on March 1 showed the cancellation.
The document is a revised version of a notice first posted on Jan. 14. A note beside the entry for Richardson International in the latest document reads: "Canola export registration already canceled."
A lasting block on Richardson's canola exports would be a headache for Canada's biggest grain handler and a potential blow for the country's economy as a whole.
Oilseeds like canola, fruit and grain are Canada's biggest China export category, making up nearly 17 percent of all exports in 2017, the latest annual data available, according to the Asia Pacific Foundation of Canada.
ICE (NYSE:ICE) May canola futures RSK9 fell $4.30, or about 1 percent, to $458.50 per tonne.
Canadian Foreign Minister Chrystia Freeland said she was "very concerned" by the blocked shipment.
"We do not believe there is any scientific basis for this ... we are working very very hard with the Chinese government on this issue," she told reporters in Longueuil, Quebec, saying the matter was of the utmost priority for Ottawa.
CANADIAN CANOLA, AUSTRALIAN COAL
As the diplomatic dispute between China and Canada intensified, Beijing has detained two Canadians working in China, and on Monday accused one of them of stealing Chinese state secrets passed on to him by the other. had already been reports last month that Canadian canola shipments to China had been slow to clear customs amid the dispute. buys some C$2.5 billion ($1.88 billion) of Canadian canola per year, and a slower pace of sales would mean another hit for exporters, which include Viterra VILC.UL and Cargill Ltd CARGIL.UL .
The restriction on imports of canola from a country with which links have worsened echoes moves by Chinese customs to slow clearing of Australian coal imports. ties with China have deteriorated since 2017, when Canberra accused China of meddling in its domestic affairs. ($1 = 1.3331 Canadian dollars)
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