shannxi hainaisen petroleum technology Co.Ltd

Date: 20th April 2016
83/4" HS662XA 6 rezila Drill Bit, jekla organ PDC Bit, API standarda
PDC DRILL BIT, JEKLA TELO DRILL BIT, 6 REZILO SVEDER, SREDNJE MEHKO SVEDER, OLJE TUDI DRILL BIT,
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