Ndi kukwezeleza zomangira zobiriwira ndi otsika mpweya zomangira ndi njira zobiriwira zomangira ndi boma, kufulumizitsa ntchito mafakitale a nyumba zatsopano, mwamphamvu kumanga nyumba zomangidwa kale, ndi kulimbikitsa apamwamba mlingo wa nyumba zitsulo zomangidwa ndi zitsulo, kodi makampani precast konkire kukhala mtsogolo?Poyang'anizana ndi mavuto ndi zovuta zomwe zilipo, kodi makampaniwa ayankha bwanji?