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Cangzhou Great drill bits co.,ltd

we are one of the largest PDC bits manufacturer in Asia. we specialize in designing ,manufacturing and marking of various high quality deamond drill bits for varous petroleum drilling activites. the main drill bit types: ...

Cangzhou Great drill bits co.,ltd
Junziguan Industry Zone, Hejian, Hebei Province,
cangzhou, HB
China

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