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28m3/h 4-way reverse valve is used in12~20HP heat pump water chiller or hot fluoride defrost 10~15HP blast freezers - AliExpress
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712F/2L-005 EBM-PAPST - Ventilátor: DC | axiální; 12VDC; 70x70x15mm; 28m3/h; 25dBA; kluzné | TME Czech Republic s.r.o. - Elektronické součástky
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Atmosphere | Free Full-Text | Effects of Outdoor Air Pollutants on Indoor Environment Due to Natural Ventilation
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