Plastic ventilation cover for building drainage

The utility model discloses a plastic ventilation cover for building drainage, and relates to the technical field of ventilation covers. Comprising a ventilation cover, a pipeline is arranged below the ventilation cover, a fixing rod is fixedly installed on the inner wall of the ventilation cover, a...

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1. Verfasser: OU WENCONG
Format: Patent
Sprache:chi ; eng
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