shannxi hainaisen petroleum technology Co.Ltd

Date: 19th April 2016
83/4" HM352XA PDC telaga minyak gerudi bit / keluli badan PDC bit / PDC Rock gerudi bit
Telaga minyak gerudi bit / keluli badan PDC bit / PDC batu gerudi bit/PDC bilah gerudi gerudi Bit/pembekalan bit PDC/kilang bekalan berkualiti Diamond PDC gerudi Bit
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