Petroleum Machinery, Fishing Tool manufacturer / supplier in China, offering High Rigidity Double-Way Shock Absorber Oil Well Drilling Tools Downhole Jarring Tool Two Way Shock Sub, Oil Well Yj One-Way Shock Absorber Bumper Vibration Reducing in Drilling Operation Downhole Accident Remedy, Bowen Similar 150 Overshot Downhole Fishing Tools for Drill Collar and Drill Pipe and so on.
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