Huawei Technologies' chief financial officer Meng Wanzhou has suffered a setback by a Canadian court as she tries to avoid extradition to the US to face bank fraud charges, dashing hopes for an end to her 18-month house arrest in Vancouver. 

The ruling, which could further deteriorate relations between Ottawa and Beijing, elicited immediate strong reaction from China's embassy in Canada.

The embassy said Canada is "accomplice to United States efforts to bring down Huawei and Chinese high-tech companies." 

Meng, a Chinese citizen and daughter of Huawei's billionaire founder Ren Zheng, was arrested in December 2018 on a warrant issued by US authorities. 

They accuse her of bank fraud for misleading HSBCabout Huawei's relationship with a company operating in Iran, putting HSBC at risk of fines and penalties for breaking US sanctions on Tehran. 

Meng's lawyers argued the case should be thrown out because Canada did not have sanctions against Iran. 

But British Columbia's Superior Court Associate Chief Justice Heather Holmes disagreed, ruling the legal standard of double criminality had been met. 

"Ms Meng's approach would seriously limit Canada's ability to fulfill its international obligations in the extradition context for fraud and other economic crimes," Judge Holmes said. 

Huawei said it was disappointed by the Canadian court ruling and it expects that Canada's judicial system will ultimately prove her innocence. 

The ruling paves the way for the extradition hearing to proceed to the second phase starting June, examining whether Canadian officials followed the law while arresting Meng. 

Closing arguments are expected in the last week of September and first week of October. 

Reid Weingarten, a US lawyer for Meng, said Meng should "not be a pawn or a hostage" in the China-US relationship. 

Ties between the two superpowers are deteriorating steadily amid disputes over trade and the future of Hong Kong. 

Shortly after the ruling was released Meng, 48, arrived at the courthouse for an in-person briefing and left without talking to the media. Meng says she is innocent. 

Shortly after her arrest, Beijing detained two Canadians on national security charges and halted imports of canola seed.

The Chinese embassy in Ottawa said in a statement that China expresses strong dissatisfaction and firm opposition to the decision on Meng and has made serious representations with Canada.