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Crankshaft machining device
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Inner curve groove multi-axis machining device
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Drive system arrangement structure of car lifting jack
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Safety alarm system for bracket mechanism of car lifting jacks
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Lead screw and nut connecting structure
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Car lifting machine
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Movable type car lifting jack
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Car lifting jack with fall preventing function
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Holding head telescopic structure of car lifting jack
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Car lifting jack unit synchronous lifting method
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Bayonet structure for locking holding head
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Car lifting jack system
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Synchronous lifting method of car lifting unit based on pressure sensor
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Car lifting machine with double self-locked structures
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Mounting structure of lead screw for car lifting jack
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Synchronous lifting system of car lifting unit based on pressure sensor
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Synchronous lifting system of car lifting unit
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Safety alarm system of operation nut of car lifting machine
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Car lifting jack body landing safety alarm system
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Connection structure of guide rails and bracket mechanism of car lifting jack
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