It is also necessary to provide, in cases where sufficient evidence is submitted of changed circumstances, for interim reviews or for investigations to determine whether refunds of countervailing duties are warranted.
Is gá foráil a dhéanamh freisin, i gcásanna ina dtíolactar go leor fianaise go bhfuil athrú ar imthosca, maidir le hathbhreithnithe eatramhacha nó maidir le himscrúduithe lena chinneadh an ndlífear aisíocaíochtaí dleachtanna frithchúitimh.