Isistimu ethule, i-damper eyakhelwe ngaphakathi yenza umnyango uvale kancane futhi uthule.
Aosite, kusukela 1993
Isistimu ethule, i-damper eyakhelwe ngaphakathi yenza umnyango uvale kancane futhi uthule.
Isistimu eyisimungulu iqinisekisa ukuthi idrowa liyaphushwa futhi lidonswe buthule futhi kahle.Isandiso esigcwele esithambile sokuvala amaslayidi ekhabetheni langaphansi kulula futhi kulula ukuwasebenzisa ukwenza idrowa lizinze kakhudlwana.Ubude bokuphuma bude kune-1/2 evamile ukuze uthole okwengeziwe. ukufinyelela okulula.