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14
YRS
Changsha Tianhe Drilling Tools And Machinery Co., Ltd.
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DTH Drilling System for Blasting Hole
DTH Drilling System for Water Well
DTH Drilling System for Foundation & Pile
DTH Drilling System for Deep Well
Overburden Casing Drilling System
Reverse Circulation(RC) Drilling System
Hydraulic Crawler drilling rigs
Top Hammer Drilling System for Blasting Hole
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DTH Drilling System for Deep Well
Stabilizing drill pipe
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