shannxi hainaisen petroleum technology Co.Ltd

Date: 18th April 2016
83/4" HS662XA 6 bilah gerudi Bit, Bit PDC badan keluli, API Standard
PDC GERUDI SEDIKIT, KELULI BADAN GERUDI SEDIKIT, 6 BILAH BIT GERUDI, GERUDI SEDERHANA LEMBUT SEDIKIT, MINYAK DAN GERUDI SEDIKIT,
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