Chinese tech giant Huawei, facing US criminal charges and economic sanctions, is planning to relocate its telecommunications research from the United States to Canada, founder Ren Zhengfei said in an interview published Tuesday.

Speaking with the Globe and Mail newspaper at Huawei's headquarters in Shenzhen, Ren said the company is also considering building new factories in Europe to make fifth-generation or 5G equipment.

The pivot comes as Washington steps up pressure on allies to ban Huawei components from 5G networks, warning that it may be used by Beijing for spying or hacking.

Canada is reviewing the technology but has not announced a decision.

Huawei's centre for research and development "will be moved out of the United States and will be relocated to Canada," Ren told the Globe and Mail.

Huawei has already added 300 employees in Canada this year, for a total of 1,200. "The director in charge of business plans in the United States is actually working in Ottawa," he said.

The company's US research arm, Futurewei, has already trimmed its staff by 600 to about 250, as US restrictions impeded its ability to work with the parent company.

"We can't exchange calls or emails with them," Ren said. "That's why we will shift our focus of development more toward Canada."

Huawei has stripped US technology from 5G equipment sold around the world, and by the end of next year Ren said he expects its entire consumer lineup to be purged of US parts. In Europe, Huawei "plans to set up factories," he said. By manufacturing 5G equipment outside China, "the cost may be a little higher, but we may be able to win more trust from Europe." The plan for factories in the European Union, however, is subject to a feasibility study.

Relations between Canada and China soured after Ren's daughter and Huawei chief financial officer Meng Wanzhou was arrested last year during a flight stopover in Vancouver on a US warrant alleging violations of sanctions against Iran.