CHIEF TELECOM INC revenue for the last year amounted to 3.24 B TWD, the most of which — 1.42 B TWD — came from its highest performing source at the moment, Data Network Services, the year earlier bringing 1.39 B TWD. The greatest contribution to the revenue figure was made by Taiwan — last year it brought CHIEF TELECOM INC 2.14 B TWD, and the year before that — 2.11 B TWD.