core drilling

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[CN] wuxi geological drilling equipment co.,ltd [Manufacturer]
Key Products/Services:
Business Overview: our company is mainly engaged in the production of BQ/NQ/HQ/PQ wireline core barrel drilling tools,drill rod ,overshot assembly,diamond core bit,reaming sh...

[CN] HEBEI HOLLYLAND CO., LTD [Manufacturer]
Key Products/Services:
Business Overview: HEBEI HOLLYLAND CO., LTD, established in 1984, is one of the leading manufacturer of DIAMOND DRILLING TOOLS in China, also a high-tech enterprise specialize...