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Wedge Disc Wedge Disc PC-1 Retrievable Packers PC-1 Retrievable Packers COMBINED DRIVE DRILLING RIG for Drilling Depth of 3000-7000 Meters COMBINED DRIVE DRILLING RIG for Drilling Depth of 3000-7000 Meters cast steel flange globe valve(casting globe valve,oil valve) cast steel flange globe valve(casting globe valve,oil valve) CX: Metal Ring Valves with Sinus Springs CX: Metal Ring Valves with Sinus Springs
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