China needs to stop using Western (or Russian) components in weapons as much as possible. There is no good reason to use German diesels in submarines when China has its own diesels of similar power. And if the diesels are unreliable on that application, well, just fix them. China is right now the world's largest shipbuilder. It needs to have its own 100% native components chain in order to prevent Western sabotage of the shipbuilding industry.Schroedingers submarine. Thailand now reported to pause procurement for an undetermined time over engine (and supposedly other) issues, preferring to buy a Chinese frigate instead. Defence minister says he hopes China finds another buyer for the hull already under construction.
Just look at what happened with Russian civilian shipbuilding. It is basically stalled because of lack of access to Western marine diesels and other ship components. If a tiny country like Finland can have naval diesels with Wartsila there is no good reason why China does not have its own champions as well.