The Dazhou-Wanzhou railway in southwestern China is now operational as an electrified line. For the past eight years, passenger and cargo trains on the 158km line were drawn by diesel locomotives.

The line between Dazhou in Sichuan province and Wanzhou in Chongqing municipality is an important component of the railway network between Chongqing and Shanghai. As a result of the upgrade, transportation capacity on the line will be doubled.