WESCO INTL INC. DL-,01 revenue for the last year amounted to 21.08 B EUR, the most of which — 8.26 B EUR — came from its highest performing source at the moment, Electrical & Electronic Solutions, the year earlier bringing 7.80 B EUR. The greatest contribution to the revenue figure was made by United States — last year it brought WESCO INTL INC. DL-,01 15.64 B EUR, and the year before that — 15.05 B EUR.