Okwangoku, inkampani inemigca emibini yemveliso eyenziwe ngamazimba +3 imigca yokuvelisa umbala.
Singakwazi ukubonelela: i-spangle engu-zero, i-spangle encinci, i-spangle eqhelekileyo, i-spangle enkulu.
Idilesi yefektri: Isixeko samanqindi, eShandong