Passenger Train, Electric, Series E235

History: The E235 series (E235系, E235-kei) is a DC electric multiple unit (EMU) commuter and suburban train type operated by East Japan Railway Company (JR East). The commuter variant was introduced on Yamanote Line services in November 2015, and the suburban variant entered service on the Sōbu Rapid and Yokosuka Lines on 21 December 2020.

Railroad/Company: Japan Transport Engineering Company (J-TREC) (株式会社総合車両製作所, Kabushiki gaisha Sōgō Sharyō Seisakusho, lit. "Stock Company General Rolling Stock Plant") is a manufacturer of heavy rail cars in Japan, formerly known as Tokyu Car Corporation (東急車輛製造株式会社, Tōkyū Sharyō-seizō kabushiki gaisha). The company is based in Kanazawa-ku, Yokohama, and a member of East Japan Railway Company (JR East) group. J-TREC manufactures rail vehicles not only for JR East and Tokyu Corporation but for other Japanese operators, including various Japan Railways Group companies and international operators as well.