zuanlongbits@gmail.com

+86-029-82612068

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Email: zuanlongbits@gmail.com

Tel: +86-029-82612068

Fax: +86-029-82612068

Address:No 66, Changming Road, Xi'an, Shaanxi Province, China

Concave Pdc Drill Bits For Sandstone,Limestone Clay Geological PDC Core Bits Water Well Drilling Bits

Concave Pdc Drill Bits For Sandstone,Limestone Clay Geological PDC Core Bits Water Well Drilling Bits

The four wings normal type concave drill bits suits for f<=10, the reinforced type suites for f<=15

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