Kupol, Almaz-Antey and the Russian defense ministry did not respond to requests for comment for this article.
He said more information was needed to establish that China was playing host to production of Russian military drones.
"China cannot continue to fuel the largest conflict in Europe since the Second World War without this impacting its interests and reputation."
"We are extremely concerned by reports that Russia is producing military drones in China," a spokesperson said.
Beijing has repeatedly denied that China or Chinese companies have supplied Russia with weapons for use in Ukraine, saying the country remains neutral.
Persons:
Russian Federation Manuel Augusto Moreno, IEMZ, Kupol, Fabian Hinz, Samuel Bendett, Farah Dakhlallah, Kupol's
Organizations:
Russian Federation, Ukraine, Reuters, International Institute for Strategic Studies, Center, New, New American Security, White House National Security Council, NATO
Locations:
People's Republic of China, Russia, China, Russian, Ukraine, Beijing, London, New American, Washington, U.S, Europe, Kupol, Izhevsk