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Double-door elevator capable of automatically calling and preventing people from blocking
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Barrier-free protection elevator for disabled people
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Elevator braking equipment with car capable of automatically resetting
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Information acquisition device based on folding times of PCB (printed circuit board) flexible printed circuit board
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Hydrology information acquisition device to river silt content
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Blood routine information acquisition equipment for finger blood sampling
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Multifunctional child safety chair
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Movable base matched with child safety chair for use
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Adjustable child safety chair
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