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Gutter and manufacture thereof
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Fish nest block
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Parking garage with underground housing room, and block for parking garage underground housing room
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Combination bench
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Retaining wall
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Constructing method of retaining wall
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Construction of retaining wall
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Manufacture of tile unified concrete panel
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House heat storing apparatus using hollow perforated concrete plate
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Tile for driving hollow perforated concrete and manufacture of tile driving panel
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Manufacture of uneven panel in hollow perforated concrete
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