Iimpawu zevalve yesango eliqinileyo kunye nendawo yokusebenza, kunye nezilumkiso zokuthenga, kunye nokugcinwa kwentshayelelo eneenkcukacha.
Iimpawu zevalve yesango eliqinileyo kunye nokusingqongileyo okusebenzayo, kunye nezilumkiso zokuthengwa, kunye nokugcinwa kwenkcazo eneenkcukacha yentshayelelo eHard seal gate ivelufa enokumelana nokunxiba, ukumelana nokudleka, ukumelana nobushushu obuphezulu, ubushushu obuphantsi...
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