Underground cable bracket steel ring installation robot View：1019

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DTH drills View：1038

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Drilling rig (bionic DTH micropile) View：1040

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Drilling Rig (DR50) View：1078

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Step-by-step drilling rigs View：1040

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A clearing device for DTH drilling machines View：1153

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A kind of reclaiming cylinder device for DTH drilling machine View：1208

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A telescopic hydraulic rock drilling device View：1019

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A flying wing hydraulic impactor View：1105

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Step-by-step drilling rigs View：1071

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A multi-functional mountain micro pile drilling rig View：1124

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An integrated hydraulic shock gas slag discharge type rock drilling device View：1154

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A self-tightening drill bit View：1109

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A high-strength bearing View：1042

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Reciprocating pump split type rolling bearing crankshaft assembly View：967

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A roller shaft assembly with emergency stop function View：907

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