Zosefera thumba la kaboni zitsulo, madengu osapanga dzimbiri zitsulo zosefera mkati, zomwe ndizotsika mtengo, zimagwiritsidwa ntchito kwambiri m'mafakitale amafuta, etc.
Chosefera chamtundu wamtundu wamtundu wapamwamba kwambiri chimatengera njira yachikhalidwe yolowera pamwamba komanso yotsika kwambiri yosefera thumba kuti madziwo azisefedwa kuchokera pamalo okwezeka kupita kumalo otsika. Chikwama cha fyuluta sichimakhudzidwa ndi chipwirikiti, chomwe chimapangitsa kuti kusefera bwino komanso moyo wautumiki wa thumba la fyuluta. Malo osefera nthawi zambiri amakhala 0.5㎡.