Franco had the edge on resupply, as the Nationalists now controlled the efficiently run industrial might in the Basque Country. The Republican government, however, had to leave the armament industry in Catalonia in the hands of the anarchists.
The text describes a situation where Franco had an advantage in receiving supplies due to the Nationalist control over the Basque Country's industrial capabilities.  However, the Republican government was unable to relinquish control of the arms manufacturing sector in Catalonia to anyone other than anarchists.