<prompt> Tšweletša phetolelo e raraganego ya polelo ye The ke mohuta wa yuniti ya mohlagase ya go fapafapana yeo e dirišwago bakeng sa ditirelo tša ka ntle le tša ka ntle ga toropo tšeo di laolwago ke East Japan Railway Company JR East kua Japane ga e sa le go tloga ka 2000.  <response>: Ke therešo gore phetolelo e raraganego kudu ya polelo ke e rego, Ke mohuta wa EMU wo o dirišwago bakeng sa ditirelo tša banamedi le tša ka ntle ga ditoropo tšeo di laolwago ke East Japan Railway Company JR East kua Japane, le go tšweletšwa ke Tokyu Car Corporation, Kawasaki Heavy Industries le gape le kua feketoring ya JR East kua Niitsu Prefecture ya Niigata. 