17-1/2 Inch API PDC Diamond Drill Bit for Oil Gas Well Rock Drilling
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Hebei SPT Seals Technology Co., Ltd.1000kw Jichai A12V190pzl-1 Chidong Brand Diesel Engine for Oil Rig
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Cangzhou JW Petroleum Machinery Co., Ltd.Lw Series Oil Industrial Decanter Centrifuge for Hemp Ethanol Separation
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Cangzhou JW Petroleum Machinery Co., Ltd.