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Tunnels
Taiwan 9 line, Su-hua highway, Guan-yin tunnel (B2 tender)project.
East
Tunnels
Taiwan 9 line, Su-Hua highway, Gu-Feng tunnel (B3 tender)project
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Freeway no. 5 - Taipei - Su'ao Freeway - Nangong & Shihding section
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Hsinyunchuen Tunnel of North Circulation Line Project
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Tunnels
6K+620~10K+480 tunnel construction for Yuchang Express way
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