Beijing warned that additional sanctions imposed by the U.S. against Chinese companies over alleged attempts to evade U.S. export controls on Russia are illegal and endanger global supply chains.

In a statement issued April 15, China’s Commerce Ministry said the action by the United States “has no basis in international law and is not authorized by the United Nations Security Council,” reports the Associated Press.

“It is a typical unilateral sanction and a form of ‘long-arm jurisdiction’ which seriously damages the legitimate rights and interests of enterprises and affects the security and stability of the global supply chain. China firmly opposes this,” the statement said. “The U.S. should immediately correct its wrongdoing and stop its unreasonable suppression of Chinese companies. China will resolutely safeguard the legitimate rights and interests of Chinese companies.”

The United States Commerce Department added five companies based in mainland China and Hong Kong to its “entity list” April 12. The designation by the U.S. forbids the five organizations from trading with American firms without gaining “a nearly unobtainable special license,” AP reported.

The sanctions were brought against Allparts Trading, Avtex Semiconductor, ETC Electronics, Maxtronic International and STK Electronics.

The U.S. reportedly suspected the aforementioned entities “have been involved, are involved, or pose a significant risk of being or becoming involved in activities contrary to the national security or foreign policy interests of the United States.”

The U.S. Commerce Department also said the five businesses were designated as “military end users” because they were “attempting to evade export controls and acquiring or attempting to acquire U.S.-origin items in support of Russia’s military and/or defense industrial base.”