Umngundo zizixhobo zenkqubo engundoqo ezisetyenziswa kwimveliso yemizi-mveliso yokuvelisa ngobuninzi kunye nokubunjwa ngokufanelekileyo kweemveliso. Ngesakhiwo esichanekileyo sombhobho, bagcwalisa, bamise, kwaye baqinise izixhobo ezifana neentsimbi, iiplastiki, irabha, okanye i-ceramics phantsi kweemeko ezithile (ezifana noxinzelelo kunye nobushushu), ekugqibeleni bafumana iimveliso ezinokwakheka, ubungakanani kunye nokusebenza. Umngundo waziwa ngokuba "ngumama weshishini," kwaye inqanaba labo loyilo kunye nomgangatho wokuvelisa umisela ngokuthe ngqo ukuchaneka, inkangeleko kunye nokusebenza kakuhle kwemveliso. Zisetyenziswa kakhulu ekwenzeni iimoto, i-electronics, izixhobo zasekhaya, ukupakishwa, kunye nempahla yabathengi bemihla ngemihla.