so you are expecting China to exports lithography machines to Russia ? SMEE have wide range of machines.Furthermore, if it wasn't for Russia supplying Su-27 to China in the early 90s after Tian An Men square and Western sanction against China, Taiwan would have invaded China and ousted Communists because at the time China had no access to fighter jets from the West because of Western sanction against China after Tian An Men square and the best fighter jet China had at the time was J-7 which was no match for Taiwan's F-16. So today China returns the favor and has no sanction against Russia which allows Russians to buy laptops in China and truck them to Russia.
i have seen some of your previous posts. you seriously lack knowledge about China. you are new on this forum and i can understand.