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hejian,Cangzhou,Hebei,China China
TCI tricone rock bits 1TCI Bits Series 1).Cutting Structure The durability of premium tungsten carbide inserts is improved with new formulas and n
Bits Parameters Drilling Parameters Size Nozzle number Gauge length API connections Hydraulic flow rate Rotation speed Weight on bit in No. in in
連絡先担当者 Bella wang
住所 hejian, Cangzhou, Hebei
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