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Changsha Chaojingang Machinery Manufacturing Co., Ltd.

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City:changsha

Country/Region:china

Contact Person:MrWilson Chen

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Customized Casing Drilling System Ql40 Eccentric Casing System Rust Resistance

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We are capable to design and manufacture according to customer's requirement on the Bit DiaNo., Air holes, carbide button shape and the bit face shape...

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