shannxi hainaisen petroleum technology Co.Ltd

Date: 19th April 2016
83/4" HM352XA sumur minyak PDC Drill bit / baja tubuh PDC bit / PDC Rock Drill bit
Sumur minyak Drill bit / baja tubuh PDC bit / PDC Rock Drill bit PDC Blades Drill Bit pasokan bit PDC pabrik pasokan berkualitas tinggi berlian PDC Bor Bor
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