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https://www.youtube.com/watch?v=UWaq-9H_HeE
https://www.youtube.com/watch?v=BueW9aQW0io
Location: Tainan City, Taiwan River and highway pipeline drilling and excavation Use device: paratrackII
https://www.youtube.com/watch?v=pbPgoPQpbK8
https://www.youtube.com/watch?v=0RZUET-MdXw&list=PLCyJUW1YwFqhfINwg_TUalHboBSdvVVXh&index=4
https://www.youtube.com/watch?v=_cvf1vNtSSQ https://www.youtube.com/watch?v=fVI4MBdlJUg&t=39s