shannxi hainaisen petroleum technology Co.Ltd

Date: 14th November 2015
81/2"HM952XA HOT SELL! PDC CUTTER For Oil Drill Bit, PDC Drill Bit Inserts Oil Well PDC Drill Bit & Gas Well PDC Coring Bit &PDC Bit
Oil and Gas Drill Bit/ PDC Well Carbide drill bit/ China Good quality/ diamond pdc drill bit/ good quality
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