Beijing's envoy to Canada on Saturday denied that Chinese companies were involved in industrial espionage, and challenged anyone to prove the contrary.
Copies of the "Investigative Report on the US National Security Issues posed by Chinese Telecommunications Companies Huawei and ZTE" are seen on a table as House Intelligence Committee Chairman Mike Rogers, R-MI, speaks during a press conference to release their report on the security threat posed by Chinese telecommunications companies Huawei and ZTE in October 2012 in Washington, DC.
"I can assure you that our companies working in other countries are strictly doing business according to the local laws," Ambassador Zhang Junsai told CBC radio.
"If you really have the evidence, come (out) with it. If not... shut up," he told CBC.
The diplomat blamed the allegations on "a Cold War mentality."
According to the ambassador, "even the United States could not give out evidence."
The comments come after a US House of Representatives panel in October concluded that Chinese telecom giants Huawei and ZTE pose a security threat and should be barred from US contracts and acquisitions.
The US House Intelligence Committee panel launched its probe over concerns that China could use the fast-growing firms for economic or military espionage, or cyber attacks.
Both Huawei and ZTE have denied any ties with the Chinese government. Top firm executives appeared at a Capitol Hill in September, stressing that they were focused on business, not politics.
The ambassador's statement comes as Canada's Conservative Party government has extended a probe into the proposed $15.1 billion takeover of Calgary-based oil and gas company Nexen by China's state-owned CNOOC.
"We're here not to grab your resources. We're here to participate," the ambassador told CBC.
A mid-October poll showed that nearly 60 percent of all Canadians fear that CNOOC, the China National Offshore Oil Corporation, would have a competitive advantage over public companies or believe foreign governments should not be able to control resources on Canadian soil.