WO2021012851A1
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Ultrasonic decalcification instrument
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CN110512695A
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A kind of building pipe with automatic desilting function
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A kind of automatic desludging blow-off line for building
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CN110397128A
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A kind of anti-blocking self-cleaning device of sewer pipe
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CN110468951A
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A kind of hydrodynamic force pipeline cleaning robot
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A kind of hydraulic engineering underground piping cleaning plant
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Mortar or concrete composition using coal ash, and usage thereof
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CN1884178A
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Building materials and method for making same
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CN1876260A
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Method for producing regenerated sand using mine junk
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CN101074145A
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Sludge drier
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Water magnetizing and softening device combination
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Highly magnetizing water softener
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