CDRI is a unit directly under the Chengdu Railway Bureau, and it is a special R&D institution on applied technology.
成都铁路局科研所是成都铁路局的直属科研单位，是铁路局应用技术研制和推广的专门机构。
CDRI is a unit directly under the Chengdu Railway Bureau, and it is a special R&D institution on applied technology.
成都铁路局科研所是成都铁路局的直属科研单位，是铁路局应用技术研制和推广的专门机构。
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