Mekotla e meholo ea foil ea aluminium (mekotla e thibelang mongobo, mekotla e kopantsoeng ea aluminium-polasetiki, mekotla ea vacuum, mekotla e meholo ea mahlakore a mararo e thibelang mongobo) e ka kengoa ka li-vacuum valves. Li na le mesebetsi e ntle ea ho thibela metsi, ho thibela moea le ho thibela mongobo. Thepa e ikutloa e phutholohile, ...
Bala haholoanyane