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Zhangjiakou xiandai petroleum drill

Zhangjiakou xiandai petroleum drill

The production range is from2 3/8'' to 5 1/2'' in grade E75 to S 135.We have obtained the certificate of ISO9000:2000 and API Q1.authorized by API to use the API monogram(License Number:Spec5D-0096;Spec7-0602;Q1-0054).

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. Liu

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