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The 6461a 6420 bearing of China breaks the American bearing monopoly to conquer high-speed rail beari
News 16Days Ago (05-11)Breaking the American technology monopoly, China conquering cutting-edge high-speed rail bearings, high-speed rail finally used Chinese axles In recent years, Chinese high-speed rail has been developing rapidly. By the end of 2020, high-speed rail operat...
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