50 green buses make their debut in front of Tianjin Meijiang Convention Center on Aug 29, 2010. The 50 zero-emission electric buses will first be used for the Annual Meeting of the New Champions 2010 (AMNC 2010) in Tianjin from Sept 13 to 15. Then they will be put into daily commuting and other conventional services for citizens, to help make public transportation cleaner and greener. [Photo/Xinhua] 

A transportation worker examines a bus before a test drive on Aug 29 in Tianjin. The zero-emission electric bus holds 45 seats and has a speed of up to 110 km/h. [Photo/Xinhua]