Several Huawei Technologies Co. employees have collaborated on research projects with Chinese armed forces personnel, according to Bloomberg.

Over the past decade, Huawei workers have teamed with members of various organs of the People’s Liberation Army on at least 10 research endeavors spanning artificial intelligence to radio communications. They include a joint effort with the investigative branch of the Central Military Commission to extract and classify emotions in online video comments, and an initiative with the elite National University of Defense Technology to explore ways of collecting and analyzing satellite images and geographical coordinates.

Those projects are just a few of the publicly disclosed studies that shed light on how staff at China’s largest technology company teamed with the People’s Liberation Army on research into an array of potential military and security applications.

Bloomberg saw the papers -- dating back to 2006 -- from published periodicals and online research databases used mainly by Chinese academics and industry specialists. The authors of the treatises identified themselves as Huawei employees and the company name was prominently listed at the top of the papers.

“Huawei is not aware of its employees publishing research papers in their individual capacity,” spokesman Glenn Schloss said in a messaged statement. “Huawei does not have any R&D collaboration or partnerships with the PLA-affiliated institutions,” he said. “Huawei only develops and produces communications products that conform to civil standards worldwide, and does not customize R&D products for the military.”

The Trump administration has imposed strict limits on Huawei’s ability to do business with U.S. companies and urged allies to follow suit, saying it poses a national security threat.