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person:("chen zhiyong")
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person:("chen zhihong")
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person:("chen zhidong")
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person:("chen zilong")
Anti-derail safety protection device for construction hoist
Convenience hanger rod for construction lifter and construction lifter
Connecting device of driving system and lifting cage of construction elevator
APPARATUS CONNECTION METHOD AND DEVICE, HARDWARE APPARATUS, AND COMPUTER-READABLE STORAGE MEDIUM
Directly-connected driving pure electric passenger car for groups
Sealing and dust isolating structure of luggage cabin of passenger car