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

PDC Three Wings Concave Drill Bit,PDC Concave Bit, Non Core Drill Bit for Mining

PDC Three Wings Concave Drill Bit,PDC Concave Bit, Non Core Drill Bit for Mining

PDC Three Wings Concave Drill Bit are mainly used for penetrate the degassing hole, drain hole and grouting hole of coal mine.

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