The supply of CRM to domestic companies is threatened by disruptions (e. g. trade conflicts or shortages). Relocating production to stable regions is often not possible in the context of CRM due to geological reasons. One way out is CE. From a network perspective, the resilience must be improved and expanded to include viability. In CE for resilience improvement, a distinction must be made between ex-post and ex-ante CE. Ex-post CE is used as a reaction to a disruption and ex-ante CE reduces the probability of a disruption occurring.