At this stage, the introduction of US sanctions against China due to the supply of technology to Russia, in my opinion, is an extremely unlikely scenario. But I do not rule out that this may happen in the future.
According to The Wall Street Journa, citing a review of Russian customs data, China is providing the technology the Russian military needs to wage war in Ukraine. And it does so despite international sanctions and export controls.
So far, Xi Jinping, under the threat of sanctions from the US, the EU and their allies, has denied Putin the supply of Chinese-made weapons. But the Russian Federation, buying in the PRC electronic components used in military equipment, as well as a wide range of ammunition and equipment, gets more opportunities to continue aggression in Ukraine.