Environment-friendly ventilation device for building construction

The environment-friendly ventilation device for building construction comprises a ventilation pipe, an exhaust fan is installed at one end of the interior of the ventilation pipe, fixing rods are welded to the positions, located on the two sides of the bottom end of a filter screen, of the bottom en...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	KUANG RONGPING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING HEATING LIGHTING MECHANICAL ENGINEERING RANGES VENTILATING WEAPONS
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