Wamkelekile kuluhlu lwethu oluchulumancisayo lwezibambo zeminyango ezenziwe ngemathiriyeli ye-zinc alloy ekumgangatho ophezulu.Ezi zibambo zocango azisebenzi nje kuphela kodwa zikwakhupha umoya wobunewunewu kunye nobuhle, nto leyo eyenza ukuba ibe yongezwa ngokugqibeleleyo kuyo nayiphi na ingaphakathi.