Apart from 11 companies reportedly connected to the 2023 spy balloon incident, 22 were added to the list because they were linked to China's efforts to improve its quantum technology.
The Russian president previously visited China last October to attend the Belt and Road Forum in Beijing.
Senior Chinese military officials separately met U.S. and Russian naval counterparts at the Western Pacific Naval Symposium in Qingdao, Chinese Defense Ministry spokesperson Wu Qian said during a press briefing on April 25.
Russia is expected to export natural gas to China with prices as much as 28% below those for Russia's European clients at least until 2027, Bloomberg reported on April 23, citing the Russian Economy Ministry's outlook.
U.S. Treasury Secretary Janet Yellen said earlier in April that there would be "significant consequences" if Chinese companies aid Russia's war effort.
U.S. Secretary of State Antony Blinken said that China is supplying Russia with semiconductors and other dual-use technologies that can be used for military purposes.
Beijing reacted to the criticism of its partnership with Moscow, claiming that both countries have a right to carry out "normal cooperation," Chinese Foreign Ministry spokesperson Mao Ning said at a press conference on April 10.
Russia and China have discussed ways to strengthen their cooperation in Europe and Asia in order to counter the U.S. hegemony, Russian Foreign Minister Sergey Lavrov said on April 9 in Beijing.
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