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Sheet type retaining valve structure for walking machinery
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Tool for assembling and disassembling locking nut
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Energy-saving hydraulic valve used for hydraulic excavator
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Surface hardening heat treatment process of construction mechanical movable arm intermediate shaft
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Sealed oil cylinder resistant to oil and gas
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Efficient energy-saving environment-friendly oil-hydraulic hybrid powder excavator
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Potential energy recovering control device of hydraulic excavator boom
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Three-oil cylinder movable arm working device of hydraulic excavator
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Connecting structure of bucket pin roll
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Oil-hydraulic hybrid power system of efficient energy-saving environment-friendly hydraulic excavator
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Adjustable hydraulic pipeline fixing pipe clamp
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Main crank efficient rotation power assembly of hydraulic excavator
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Energy release control device of energy accumulator of hydraulic excavator
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Three-pump type hydraulic excavator oil supply device
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