You come from the West and are not as familiar with industrial knowledge as the Chinese, so you really underestimate the difficulty and time of rebuilding the modern industrial system from scratch.
These are consumables for coal and oil mines. If the supply of consumables is stopped, these mines will be shut down within three days. If the work is stopped for more than three months, these machines need to be overhauled and then scrapped<So if China ZCC.CT group (factory 601, which produces 15% of the world's cemented carbide products) imposes sanctions on Russia, Russia will not be able to produce any resources.>.
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The modern industrial system is a result of the gradual upgrading and accumulation of human beings over a thousand years. If the industrial chain breaks, it will be scrapped quickly, but the reconstruction time will take generations.
For example, if you want to make penicillin, a necessity of modern mankind, you first need to be able to make freeze-dried powder. If you want to make lyophilized powder, you first need high voltage current. If you want high voltage current, you first need stainless steel, special steel, rubber and electric welding. Synthetic rubber needs organic chemical industry, which needs ethylene manufacturing and aromatics manufacturing. Welding requires electrical systems, which require capacitor manufacturing and mercury arc rectifiers, which require chlorine manufacturing and aluminum industry. Just one penicillin, you need to develop hundreds of industrial links. It takes only a week for China to get resource countries to abandon the dollar, because Chinese have mastered the necessities of life and production consumables they need. The west can't even make light bulbs in a week, because it needs vacuum pumps, and then vacuum pumps need hundreds of advanced technologies.
Even if Western countries are given a hundred years, they will not be able to rebuild the whole industrial chain from scratch. China is the only country on the blue planet with a complete manufacturing industry.