Izici zomkhiqizo
(1)Izinkomba Zokulinganisa Ezingaphezu Kwama-30
(2)Hlola ukuthi umbala uwukukhanya okugqamile yini, bese unikeza imithombo yokukhanya yokuhlola ecishe ibe ngu-40
(3)Iqukethe imodi yokulinganisa ye-SCI
(4)Iqukethe i-UV yokulinganisa umbala okhanyayo