shannxi hainaisen petroleum technology Co.Ltd

Date: 19th April 2016
83/4" HS662XA 6 Blades Drill Bit, PDC tubuh baja Bit, API standar
PDC DRILL BIT, BAJA TUBUH DRILL BIT, 6 PISAU BOR, MENENGAH LEMBUT BOR, MINYAK JUGA DRILL BIT,
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