Chongqing section of China Railway Chengdu Group conducts daily maintenance, disinfection operations
Staff members replace the storage batteries of a train at a train depot in southwest China's Chongqing Municipality, Feb. 19, 2020.
Staff member Zhou Tao conducts disinfection on a train at a train depot in southwest China's Chongqing Municipality, Feb. 19, 2020.
Xinhua
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