He noted the company has promised to invest 2 billion U.S. dollars (£1.53 billion) over five years to improve its software engineering and expressed confidence British regulators will "increase their confidence" in Huawei over time.
The Trump administration had "abandoned all table manners" in the way it deals with the rise of Huawei, Guo said, adding that he hoped the administration "will adjust its mentality".
While the country still doesn't recommend a ban, Britain this week publicly complained about the security risk of Huawei's networking gear, citing years-long quality problems and Huawei's inability to fix them.
Chinese telecom behemoth Huawei's salees reached $100bn (£77bn) previous year despite the Trump administration efforts to depict the telecoms firm as a global security threat.
The consumer business group was the biggest growing unit of the Chinese mobile giant, with revenues rising by 45 per cent to 348 billion Yuan (£39.8bn), meaning it is now the largest source of income for the company.
"HCSEC has continued to find serious vulnerabilities in the Huawei products examined".
Huawei released its 2018 annual report on Friday, reporting sales revenue of CNY721.2 billion, up 19.5% year-on-year.
Wow, Indeed: Wow Air Ceases Operations, Stranding Travelers
On Twitter travelers stuck in North America and Europe vented about the sudden grounding, bad communication, and ruined trips. Posting a video of a chaotic scene Toronto airport another added: '20 min to board, @ wowairsupport cancels the flight.
Huawei said it allocated 14 percent of its revenue to research and development and boasted about the 5,400 patent applications to the World Intellectual Property Organization during the year, making it globally the company with the most filings.
Earlier this month, Premier Li Keqiang promised at a nationally televised news conference that Beijing never would tell Chinese tech companies to spy on foreign countries. The company's net profit hit 59.3 billion yuan, up 25.1 percent year-on-year.
The most critical findings of the report were likely to have been softened, the official added, given Huawei's direct involvement in the board that issues it.
Guo blamed weak network gear sales on a temporary lull in investment by phone carriers. He expressed confidence 5G sales will take off this year.
At a media briefing, Guo Ping, Huawei's rotating chairman, said: "Flat sales in the carrier business were due to 4G rollout while 5G is just starting". Huawei has recently set up other cybersecurity labs in Germany and Belgium, but those only give access to network operators, not intelligence agencies. The company says it already has shipped more than 40,000 5G base stations to customers.
"It's explainable if found - but it's just as deadly", the official said, adding the bug could also be found and exploited by other adversaries, including Russian Federation and Iran.
"Spying would be equal to suicide", said Song Liuping, Huawei's chief legal officer.
The senior USA official said that countries that are dismissing warnings - these findings from the United Kingdom latest among them - were potentially inviting both compromised security and higher costs.