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A kind of prefabricated outer wall panel with heat preservation sandwich layer
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A kind of compression color steel plate overlap joint layering structure
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A kind of overlength Z-shaped purline anti-deforming structure
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A kind of overlength steel construction c-type purlin anti-deformation composite structure
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A kind of fixing piece and its process units of the overboard system of integration
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A kind of safety device for roofing construction
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A kind of assembling truss purlin system and manufacture craft
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A kind of gutter strut
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A kind of steel member paint spraying holder device and spraying coating process
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A kind of device of freely adjustable crab-bolt length
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A kind of block-resistant type arc steel structure gutter cover
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A kind of collapsible energy-absorbing venting of dust explosion internal partition wall wall stand structure
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A kind of collapsible energy-absorbing venting of dust explosion wall stand
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Adjustable straight brace device
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Adjustable batter brace device
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Adjustable brace system
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