shannxi hainaisen petroleum technology Co.Ltd

Date: 20th February 2016
81/2" HM662XA Manufactuer PDC ntsis pob zeb Diamond PDC tho khoom rau pob zeb thee Mine Drilling cuab yeej
chaw tsim tshuaj paus pdc laum ntsis/ndais pdc laum ntsis/thee mine drilling caj/cov roj drilling ntsis
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