- Cangzhou Great Drill Bits Co.,ltd
- Main products: PDC bit, roller cutters, tricone bit, coring bit, bi-center bit, Tork buster, PDC reamer, PDC hole opener, rock reamer
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- Cangzhou Great Drill Bits Co.,ltd
- Contact nameSilvia Chat Now
- Phone86-133-43177993
- AddressHejian, Cangzhou, Hebei
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