Single roller bit  IADC 637 or IADC 737-diam 8.5inch
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Single roller bit IADC 637 or IADC 737-diam 8.5inch

Single roller bit IADC 637 or IADC 737-diam 8.5inch

Add:NO.214 majiadian industry park baodi district tianjin china      86-22-58656461  Cell:008615222875497(for call) Cell:008618902059907(whatsapp)  | 
    
    
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