The supervisory panel also said that "technical issues" had been identified in Huawei's engineering processes, leading to "new risks in the United Kingdom telecommunications networks".
"Enhancing our software engineering capabilities is like replacing components on a high-speed train in motion", the letter stated.
Globally, a Taiwanese government-supported institute has "blocked Huawei smartphones and computers from accessing its internal network", reported the South China Post, in mid-January and Norway's Justice Minister Tor Mikkel Wara disclosed at the beginning of the year that the country is considering excluding the Chinese firm from investing in 5G infrastructure.
Reports suggest that the European Union is now considering a de facto ban on Huawei equipment, which has prompted the company to offer complete transparency through supervision.
"Huawei is a closely watched company", he added.
It will take three to five years for Huawei to address security issues raised by the United Kingdom government, the company has said.
"Recently Huawei has been under constant attack by some countries and politicians", Huawei vice president and representative to the EU Abraham Liu said in a speech in Brussels.
China's Huawei, one of the world's largest telecom giants, has been accused of being used for spying for the Chinese government.
But the Canadian government said it is now evaluating the risk of using Huawei's products.
Altmaier told Funke that talks on security standards for the mobile network were ongoing, adding that Germany needed to protect itself "in all sensitive areas, from hospitals to telecommunication".
The Head of Huawei in Poland, Tonny Bao made the announcement in a recent news conference and stated that the company is ready to set up a cybersecurity center in the nation if the Polish authorities accept this proposal to be a trusted solution.
He said that while some countries - including New Zealand, Australia and the US - had "indeed taken measures to restrict Huawei business activities", some of the restrictions had been "exaggerated or even misinterpreted by the media".
Complicating the situation is the Canadian arrest of a top Huawei executive sought on an extradition request by the U.S.
U.S. charges of stealing technology and violating sanctions on Iran have since been issued against the company, sparking new tensions in relations between the United States and China.
