ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa he mea kaʻa i hoʻohana ʻia i nā ʻōnaehana HVAC (Heating, Ventilation, and Air Conditioning) e hoʻomalu i ke kūlana o nā dampers (airflow-regulating plates) me ka liʻiliʻi o ka leo hana. Hoʻolālā ʻia kēia mau mea hana no nā wahi e pono ai ka hana mālie, e like me nā keʻena, nā halemai, nā hōkele, a me nā hale noho.
+86 10 67863711 
HULI 
Kāhea iā mā˚ou