China has vowed to defend its companies after a US government decision to place Huawei and 70 of its affiliates, on a trade blacklist, calling it "unreasonable".
Washington has argued equipment produced by the Chinese company could be used to spy on the US.
Huawei has repeatedly denied the allegations and said that the US decision will not improve safety or security in the US and will only harm US consumers and companies.
Al Jazeera's Adrian Brown reports from a tech trade show in Tianjin.
