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ZJ70Rig
ZJ50Rig
ZJ40Rig
ZJ30Rig
ZJ20Rig
Horizontal Automatic Mud
Spiral Casing Stabbing Board
Pneumatic Hoisting Machine of Oil Wellhead Assembly
Vertical Hydraulic Speed Regulation Ahead Box
Horizontal Hydraulic Speed Regulation Ahead Box
Novel Drill Pipe Straightener
Novel Hydraulic Governing Box of Oil Rig
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