- 10 year
- Contact [Collection]
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8-1/2" -36" Best for hard formation button bit [Collect]
- GSD-250 Crawler Drill for 250m deep
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- GSD-250 Crawler Drilling rig for 250m deep
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- GSD-2 Crawler Drilling Rig
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- XY-1A Core Drilling Rig for 100m deep with slurry pump
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