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RU1787244C
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Air distributing device
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Butt joint of three-ply panels
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Triple-ply wall panel
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Die-rolled section
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Spatial roof
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Heat exchanging tube
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Three-dimensional block
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Heat-and-tube heat exchanger
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Butt joint of three-ply panels
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Joint of three-ply wall panels
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Prefabricated section for a module
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