shannxi hainaisen petroleum technology Co.Ltd

Date: 20th February 2016
6 "HM362XA 6 labad Matrix Body Oil Drilling Pdc Drill Bit naftamaardla puurimiseks
teemant, pdc drill bit /oil field puurimine/6 tera parim kvaliteet pdc puurimine / diamond bitti suurus
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