How China tests the world's fastest bullet train | CR450
Xinhua
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Meet China's CR450, the world's fastest bullet train operating at a speed of 400 km per hour. One of its developers, CRRC Qingdao Sifang, runs high-speed crash tests to make trains safer. Its products have been exported to more than 30 countries and regions.
编辑： Qin Shuying
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