The U.S. committee said that Huawei and ZTE did not cooperate sufficiently during the investigation and failed to provide sufficient information on operations or relationships with the Chinese government. However, ZTE and Huawei shot back, saying they fully cooperated with the committee.

"The ranking member of the Committee stated at the hearing that the investigation by the committee 'is not political jousting or trade protectionism masquerading as national security'. Unfortunately, the Committee's report not only ignored our proven track record of network security in the U.S. and globally, but also paid no attention to the large amount of facts that we have provided," Huawei said in its statement.

The report is based on rumors and speculation, Huawei said.

"We have to suspect that the only purpose of such a report is to impede competition and obstruct Chinese ICT companies from entering the US market," Huawei said.

Huawei defended itself by saying it was a Fortune 500 company, and that its products were used by products in 140 countries around the world.