BEIJING — To entrepreneurs in China, he is a legend akin to Steve Jobs.
To United States officials, he is the secretive mastermind behind a company that is extending the Chinese government’s ability to infiltrate computer systems and data networks around the world.
But for all his fame and power, Ren Zhengfei, the 74-year-old founder and chief executive of the Chinese technology giant Huawei, may no longer have the luxury of letting his company’s success speak for itself.
In his first public comments since United States authorities arranged for the arrest of his daughter Meng Wanzhou, who is also Huawei’s chief financial officer, Mr. Ren told a group of reporters on Tuesday that he missed his daughter very much, and that he would wait to see if President Trump intervened in her case. He called Mr. Trump a “great president,” and said that his tax cuts had helped American business.
Ms. Meng was arrested in Canada last month on accusations of defrauding banks to help Huawei’s business in Iran. Washington is seeking her extradition, but Mr. Trump has suggested that he might intercede if it would help China and the United States reach a deal to end their trade war. Huawei has said that it is unaware of any wrongdoing by Ms. Meng.
Mr. Ren insisted that his company has not spied for China.
“I love my country. I support the Communist Party. But I will never do anything to harm any country in the world,” Mr. Ren said on Tuesday. A company spokesman confirmed his remarks.
Huawei has 180,000 employees and has become the world’s largest maker of telecommunications equipment. It estimates that it generated more than $100 billion in sales last year, and it sells more smartphones around the world than Apple. Yet Mr. Ren seldom appears in public.
When he has spoken to the news media in the past, he has played down his achievements, attributing Huawei’s success to its employees’ hard work. He has said that his company has never spied for any government — an assertion that has not eased the concerns of American counterintelligence officials.
For most of its existence, Huawei was opaque to people in China, too.
It was founded in 1987, but it did not begin publishing the names and biographies of its board members until its 2010 annual report. Mr. Ren spoke to the news media for the first time in 2013. The following year, he told The Independent of London that he had no hobbies, prompting a colleague to lean in and suggest that he enjoyed reading and drinking tea.
Mr. Ren was born in 1944, in the mountainous southwestern province of Guizhou. His parents were teachers; he was one of seven children. His father, Ren Moxun, was the son of a master ham maker in Zheijang Province. Growing up, Mr. Ren wrote in a 2001 article, the family was so poor that he did not own a proper shirt until after high school.
According to an official company biography, he studied engineering in college and joined the Chinese military’s infrastructure engineering corps in 1974 to help build and run a factory manufacturing synthetic fibers for textiles. At a time when China had no private sector economy to speak of, it was not unusual for college graduates to join the military.
The infrastructure engineering corps was disbanded in 1983, according to the official biography. A few years later, Mr. Ren and business partners founded Huawei in what he called, in a 2016 interview with the official news agency Xinhua, a “rundown shack.” The company started as a reseller of telephone equipment imported from Hong Kong, but later started developing its own technology.
As it expanded around China and then across the world, Huawei inculcated a die-hard competitive spirit in its employees, pushing them to work harder and move faster than the company’s rivals. Huawei today still speaks proudly of its “wolf culture.”
“We will always have wolf culture,” Mr. Ren said in an interview last year with Xinhua. “Catching prey might be difficult. But the wolf is unrelenting.”
Mr. Ren has a reputation for being blunt in conversation. In 2010, Rick Perry, then the governor of Texas, spoke at the ribbon-cutting for Huawei’s new American headquarters in Plano.
“If you didn’t know any better, you’d say he grew up out in West Texas,” Mr. Perry, who is now President Trump’s energy secretary, said, according to a video of the event posted online by the governor’s office.
That penchant for brutal honesty has not spared the members of Mr. Ren’s family who also have worked for Huawei: Ms. Meng and her husband, plus two of Mr. Ren’s siblings.
For a long time, people in the telecom industry speculated about whether Mr. Ren would pick one of these relatives to lead the company after his death. But in a 2013 letter to employees that was shared on a company website, Mr. Ren said that his successor needed to have vision, good character and a deep understanding of both new technologies and customers’ needs.
“My family members do not possess these qualities,” he wrote. “Therefore they will never join the line of succession.”
Mr. Ren’s plain speaking has not managed to make United States officials feel comfortable about allowing Huawei’s gear into the country’s internet infrastructure.
Huawei executives have said repeatedly that they are independent of the Chinese government and military. They have challenged Western governments to produce evidence that the firm’s products are vulnerable to state meddling.
According to a diplomatic cable published by WikiLeaks, Mr. Ren told the American consul general in Guangzhou in 2008 that if Huawei really had ties to Beijing, the company would be in real estate, not telecom equipment. That, he said, was where the easy money was.
But for some of Huawei’s critics, such assurances do not outweigh larger concerns about the Chinese government’s behavior in the digital realm.
“It’s not really about Ren’s roots in the P.L.A., in my opinion,” said Andrew Davenport, the chief operating officer of RWR Advisory Group, a Washington-based risk consulting firm, referring to the People’s Liberation Army. “It’s just the fact that they’re Chinese, and are tainted by their government’s poor record on cyberespionage.”
Mr. Davenport added: “Any global Chinese tech actor is at risk of being considered a liability, because they’re going to be susceptible to doing what Chinese government wants them to do.”