Dongosolo la zomera liyenera kupereka mankhwala abwino, madzi abwino kwambiri, ndi mpweya wabwino mu FAB yonse.Izi zimayika patsogolo zofunikira za kukhazikika ndi kusasinthika kwa zosefera zomwe zimagwiritsidwa ntchito mugawo lililonse.Zinthu zosefera za Hangzhou kinda, zosefera zotetezedwa, zopindika bwino kwambiri komanso zosefera za perfluorinated zimapatsa ntchito zosefera zokhazikika pamakina oyang'anira fakitale.
