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CGGC–contracted Yangjiawan Tunnel for the Hanyi High-speed Railway presents a brand new image

Updated: 2010-07-01

 

CGGC–contracted Yangjiawan Tunnel for the Hanyi High-speed Railway presents a brand new image

Yangjiawan Tunnel, which was contracted by CGGC for the Hanyi High-speed Railway, presented a brand new image.

 

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