shannxi hainaisen petroleum technology Co.Ltd

Date: 20th February 2016
6" HM342XA PDC laum khoom / ndais tho ntsis / Matrix cev PDCdrill ntsis rau Sandstone, Limestone
PDC laum khoom rau Sandstone, Limestone, pob zeb diamond laum ntsis pob zeb ntsis roj thiab cov pa pdc laum ntsis
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