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ZYJ-1000/180 column hydraulic rotary drilling rig
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ZYJ-1250/150 column hydraulic rotary drilling rig
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ZYJ-770/180 column hydraulic rotary drilling rig
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ZYJ-1000/180B series column mounted hydraulic rotary drilling rig
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ZYJ-570/180 column hydraulic rotary drilling rig
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ZYJ-400/270 column hydraulic rotary drilling rig