shannxi hainaisen petroleum technology Co.Ltd

Date: 2nd March 2016
83/4" HS642XA API ja ISO teras keha PDC Drill Bit Oil Well puurimiseks
PDC DRILL BIT, TERASEST KEHA DRILL BIT, 6 TERA DRILL BIT, KESKMISE PEHME DRILL BIT, ?LI H?STI DRILL BIT,
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