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4 1/2'' IADC 435 Tricone Bit

4 1/2'' IADC 435 Tricone Bit

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DONGYING SANHE PETROLEUM EQUIPMENT CO., LTD
Wechat：18954603903         Tel：+86-546 7784666
Email：iris@sanhepetro.com          Add：No.39, E'Mei Mountain Road, Dongying, Shandong, China