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All signals go for upgrade

China Daily | Updated: 2023-04-04 09:00
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Employees of China Railway 24th Bureau Group Corp Ltd, a unit of China Railway Construction Corp, work on a signal interlocking upgrade project at Xinglongchang rail yard in Chongqing. Considered the "heart" of Chongqing's rail hub, the yard handles the task of disassembling and assembling multiple domestic and international freight trains, and serves as the freight train collection center in Southwest China, CR24 said.[Photo/China Daily]
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