If convicted, they could face up to 10 years in prison.
The two men were arrested on Tuesday and are suspected of having "worked for Chinese services and to the detriment of Poland", said Polish special services spokesman Stanislaw Zaryn.
China is highly concerned over the issue, the Ministry of Foreign Affairs' press office said in a faxed response to questions.
Meng Wanzhou, the chief financial officer of Huawei and the daughter of founder Ren Zhengfei, was arrested in Canada last month at the request of the USA government.
Orange, a leading telecommunications company in Poland, says it's cooperating with the Polish security services who say a Polish employee at the company and a Chinese manager for tech giant Huawei have been accused of spying on Poland for China.
Europe should be "worried" about Huawei and other Chinese companies, given the mandatory cooperation they have to maintain with Chinese intelligence services, European Commission Vice-President for Digital Single Market Andrus Ansip said on Friday (7 December).
Poland's Internal Security Agency has detained a high-ranking employee of Chinese tech giant Huawei on suspicions of spying for China.
He worked at Orange, a company that worked with Huawei to roll out next-generation 5G mobile networks in Poland, the BBCreported.
Zaryn identified him as Weijing W and the Polish suspect as Piotr D. He alleged both suspects "carried out espionage activities against Poland".
The development comes as the USA is exerting pressure on its allies not to use Huawei, the world's biggest maker of telecommunications network equipment, over data security concerns.
News of the executive's arrest comes amid speculation that Beijing is using Huawei to spy on US companies as they build out the world's next generation of mobile-telecom networks.
Geopolitical tensions over Huawei have intensified since Canada arrested a top executive last month at the request of U.S. authorities. "We have no comment for the time being".
"On Tuesday, the ABW (Internal Security Agency) officials conducted actions, as a result of which, we handed over belongings of one of our employees", a spokesperson for the telecom said in an emailed statement. The company added it did not know if the investigation was linked to the employee's professional work, and that it would continue to cooperate with the authorities. She is out on bail in Canada awaiting extradition proceedings.
The European Commission is aware of the reports of the arrests and will reach out to the Polish authorities for further information, spokeswoman Maja Kocijancic told reporters in Brussels.
Huawei has been blocked in the USA since 2012, when a House Intelligence Committee report found it was a security risk and recommended that the government and private companies stop buying its network equipment.
Missing teen Jayme Closs found alive
Fuhrman said that while Patterson has no criminal record, he believes he has committed other crimes or has a mental defect. CBS Minnesota spoke with Jayme's aunt Sue on Thursday evening who said her niece was now at the hospital.
France queries DR Congo election outcome
The party of Kabila, who has held power for 18 years, had a candidate in the race named Emmanuel Shadary who came in third place. Tshisekedi "has wavered at times in his opposition to the regime and is far from having his late father's intransigence".