Iqonga lendawo yeChangha chengtou Protherba Imodeli yeSikhokelo seSikhokelo seNkonzo, enika icandelo ngalinye lenkqubo ligxile ekusebenzeni kwishishini elithile. Inkcazo yemigangatho ye-IC yokuKhutshwa kweMigangatho yeNgcaciso yeMigangatho yoNxibelelwano iyamkelwa ukuze ifumane i-oyile-ye-oyile enye, igesi kunye nombane. Okwangoku, izikhululo zepetrol ezisi-8, izikhululo zokuhlawula ezi-26 kunye nezikhululo ezi-2 zokugcwalisa igesi ziqhagamshelwe kwiqonga. Inkampani ye-thegas inokuyifumana intengiso, ukusebenza kunye nokugcwalisa igesi yegesi ngexesha lokusebenza, kunye nokubonelela ngenkxaso yedatha yenkampani yokusebenza yenkampani yegesi.