Ua haʻaheo ʻo Mifeng, kahi mea hana huahana ventila mai 2003, e hoʻolauna i ka Inline Duct Fan.Hoʻohui kēia peʻahi i ka hoʻomaha maikaʻi me nā haʻahaʻa haʻahaʻa haʻahaʻa a me kahi hoʻolālā nani e kūpono i nā wahi āpau.Me nā ʻano nui i loaʻa, kūpono kēia peʻahi no ka ulu ʻana i nā hale lole, nā attics, nā hale kaʻa, ...
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