Photo taken on June 30, 2015 shows a displayed model of a petroleum wagon by Titagarh Wagons Corporation during Africa Rail 2015 at Sandton Convention Centre in Johannesburg, South Africa. The 2015 edition of Africa's largest transport exhibition which features: Africa Rail, Aviation Festival Africa, Africa Ports and Harbour Show, Transport Security and Safety Show Africa and the Cargo Show Africa, opened here Tuesday. About 150 global exhibitors participate in the two-day event, which helps transport operators, investors and their partners to take advantage of the opportunities in Africa. (Xinhua/Zhai Jianlan)
