shannxi hainaisen petroleum technology Co.Ltd

Date: 27th April 2016
121/4" HM652XA Matrix kroppen PDC Bit / Diamond PDC borr / PDC Core bitar med munstycken/olja brunnsborrning
Matrix kroppen PDC-borr, oljek?lla borrning, kol gruvdrift, ranking bit diamantborrning
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