Subway trains designed and manufactured by China CNR Corp are replacing the aged rolling stock in Buenos Aires, Argentina. The first equipment, which will serve the capital city's Line A, arrived in late 2012 for a series of tests. According to a contract signed in 2008, another three lines will also use Chinese trains. The city's subway system started service in 1913. Today more than 50 carriages built a century ago are still in service.

(Source: China Daily)