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Precast beam and construction method of prestressed rigid-frame bridge using the same
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Rainwater leakage collector in bridge's expansion joint
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River ecosystem protect willow artificial plant
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Dam easy to discharge deposit
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Planting block establish structure
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Dam easy to discharge deposit
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Reinforcement block establishing structure for rode slope sliding prevention
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Breakage preventive facilities of bridge
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Vegetation block construction structure for slope of road and river
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Fractionate pipe for water pollution prevention of gathering ground
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Tenderness ground reinforcement structure using bamboo
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Waterway having movement way
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A soundproofed wall of new town
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A road equipment temporary support
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Vegetation block construction structure for slope
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Environmental friendly medial divider for road of newtown
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Wooden footpath block of new town
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Safety materials for protection of road bridge
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A fabricated green zone footpath
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Equipment of protecting boring for bottom of river
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