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a kit for sterilization cotton bar having multi function
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buoyant swordproof vest
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a ship sinkage blockade using switch magnetic device
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many purpose harnes with mounting and separate
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fuel filteration system using drill pump
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rescue lope storage device
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a board for water rescue with expansion
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apparatus for unfolding oil fence having spreading board with 3 points supporting type
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led ball for life rescue
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Sealing device for air-vent using magnetic force
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Sealing apparatus for air vent
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A vehicle for mud-flat
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Wheels for vehicle on land and mud
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Wireless communication device capable of displaying plural channels simultaneously
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a neck mike device waterproofing
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Three-dimensional oil adsorbent
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Buoyant work clothes
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