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Zip-fastener type building wallboard and zip-fastener key used during manufacture thereof
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Prefabricated member of smoke exhaust and gas exchange pipeline
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Special tool for producing cavities in wall materials
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Zipper model ruler for manufacturing zipper groove in zipper-type architectural wall plate and method for manufacturing zipper groove by using zipper model ruler
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Outdoor rain-snow protection cap of prearranged smoke discharging ventilating pipeline
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Anti-cracking belt trough formed in wallboard, frame for manufacturing anti-cracking belt trough and method for installing wallboard provided with anti-cracking belt trough
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Air inlet-and-outlet hole in smoke discharge ventilation pipeline of building and manufacturing method thereof
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Tool for manufacturing exhaust vents of smoke exhaust ventilating pipes and using method thereof
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Tool special for manufacturing inner cavity of wall body material
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Special die for manufacturing inner cavity of building slat
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Smoke exhausting and air changing pipe
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Hollow wall material capable of preventing dropping of facing and manufacture method thereof
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Hollow light bar and manufacture method thereof
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Fume exhaust ventilation pipeline preformed part and manufacturing method thereof
