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folding up-type freeze and burst protection facility for fire-fighting piping of buildings
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The management system of the apartment house utilizing the electric line communications network
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Terminal box for communication cables
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Install structure of slow descending device
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Firefighting injection apparatus and system
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One body type watt-hour meter with multi-terminal block
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Multi-terminal block for uninterruptible tasks of watt-hour meter
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Maximum power demand controller
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Maximum power demand controller
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Uninterruptible electric watt hour meter box
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Insulator
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