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CR300AF动车组由中车四方牵头，基于成熟的CR400AF系列设计研发的时速250 km/h动车组列车，同时还衍生出Cinova2.0系列城际动车组。
CR300AF (Engineering samples) EMU Train was born in October 2018, belongs to the CR300AF series, 4M4T in marshalling, the hole length is 208.95 m, has a maximum design speed of 250 km/h, and 285 km/h in the experiment .
CR300AF EMU Train was born in Jult 2020, belongs to the CR300AF series, 4M4T in marshalling, the hole length is 208.95 m, has a maximum design speed of 250 km/h, .
CRH6A-A (Gen 2) EMU Train was born in April 2023, belongs to the Cinova 2.0 series, 2M2T in marshalling, the hole length is 100.67 m, has a maximum design speed of 200 km/h, and 220 km/h in the experiment .