Huawei had ambitious plans in Europe to roll out next-generation "5G" mobile networks.
Polish officials have not charged Huawei with wrongdoing concerning Wang's case.
Its chief technology officer Mike Davies has also said a ban would create a duopoly for the supply of 5G gear that could push prices up - as Ericsson and Nokia would be the only alternative vendors for much of the equipment needed. If found guilty, the two face up to 10 years in prison.
A LinkedIn profile for a man named Stanislaw Wang appears to match details of the man described by Polish television. The resume said he received a bachelor's degree in 2004 from the Beijing University of Foreign Studies.
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Poland's domestic counterintelligence agency (ABW) arrested a Huawei employee, who worked for the Chinese government in the past, and a former Polish agent of the internal security agency on Tuesday (8 January).
A Huawei representative said the company was looking into the matter and declined to comment further.
"As we start 2019, it is time for a change", Bradley said in the post. The company said it abides by applicable laws wherever it operates and expects employees to do the same.
The arrests mark escalating concerns among western governments about the Chinese company's activities. The Eastern European country's officers have seized documents from both Huawei's and Orange's offices.
Orange told the AP it did not know if the suspicions against its employee were related to his professional duties and that it was working with the country's security agency. Since the Canadian government detained Huawei CFO Meng Xingzhou in December a year ago, Huawei's Canadian branch has always been the focus of attention.
The US blocked Huawei from operating in its territory in 2012, when a House Intelligence Committee report said it was a security risk.
Huawei has repeatedly denied claims of secret ties to the Chinese government.
Huawei, as CNN reports, is one of the foremost telecom companies in China, selling more phones than Apple, with an interest in branching out into a larger, global market.