CRRC Changchun wins contract to supply 174 new subway cars for Buenos Aires Line B, Argentina July 15, 2025 | Latin America News, News Subterráneos de Buenos Aires Sociedad del Estado (SBASE) has awarded a contract to CRRC Changchun Railway Vehicles Co. Ltd. for the full renewal of the Line B fleet. The line is the city’s busiest sub... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password