Ubwino wa mtengo umachokera pakuwongolera mosamala pa wopanga ndi dongosolo pafakitale. Kuchepetsa zabwino zomwe zimapangitsa kuti phindu lizikhala bwino si zomwe timachita ndipo timakhala ndi khalidwe loyambirira.
GS nyumba imapereka njira zotsatirazi zothetsera malonda omanga: