Models of China's standardized electric multiple units are seen on display at the stand of China Railway during China-Africa Equipment Manufacturing Industry Exhibition in Johannesburg, South Africa, on Dec. 4, 2015. As a highlight event taking place during the 2-day Johannesburg Summit of the Forum on China-Africa Cooperation (FOCAC), the exhibition showcased fist products by about 50 Chinese and African manufacturers. (Xinhua/Zhai Jianlan)
