shannxi hainaisen petroleum technology Co.Ltd

Date: 9th May 2016
6" HM342XA PDC Drill Bits / diamant bore Bit / Matrix Body PDCdrill Bit For sandsten, kalksten
PDC drill bits til sandsten,Website:http://www.pdcoiltool.com, kalksten, diamond drill bit rock bit olie og gas pdc borehoved
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