AAON INC. DL-,004 revenue for the last year amounted to 1.16 B EUR, the most of which — 829.50 M EUR — came from its highest performing source at the moment, AAON Oklahoma, the year earlier bringing 813.52 M EUR. The greatest contribution to the revenue figure was made by United States — last year it brought AAON INC. DL-,004 1.13 B EUR, and the year before that — 1.02 B EUR.