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fish way apparatus
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A sluice
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Self controlled floodgate apparatus
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Floodgate apparatus
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Floodgate apparatus
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Floodgate apparatus
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Floodgate apparatus
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fish way apparatus
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Automatic fish way apparatus
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Floodgate apparatus
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Floodgate opening and closing apparatus where the generator is had
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Fish way and opening and shutting where possible waterway the floodgate system is had
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Floodgate apparatus it opens and shuts waterway the which has an ozone supply function
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Ozone supply apparatus for water and ozone supply method using the same
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