Itephu ligama elidumileyo levalvu yamanzi, esetyenziselwa ukulawula ubungakanani bokuhamba kwamanzi kunye nokugcina amanzi.Ukutshintshwa kweetephu zikhawuleza kakhulu, ukusuka kwinkqubo yentsimbi endala ukuya kuhlobo lwe-knob ye-electroplating, ukuya kwintsimbi engenasici kwiqondo lobushushu elinye kwitephu yolawulo, intsimbi ephindwe kabini...
Funda ngokugqithisileyo