Ezi mveliso ziphehlelelweyo ziimodeli eziphambili zeShantui zokuthengisa: SG16-C5, SG18-C5 kunye ne-SG21-C5 grader.
I-C5 grader isekelwe kwiimfuno zemarike, ngokuqwalasela ukuguquguquka kwamacandelo, ukwakheka kwembonakalo kunye nokusebenza komatshini wonke kuphuculwe.Ngelo xesha, amava okusebenza aphuculwe kakhulu