SINCERE NAVIGATION CORP revenue for the last year amounted to 4.23 B TWD, the most of which — 2.88 B TWD — came from its highest performing source at the moment, Bulk Wheel, the year earlier bringing 3.35 B TWD. The greatest contribution to the revenue figure was made by Global — last year it brought SINCERE NAVIGATION CORP 4.23 B TWD, and the year before that — 4.24 B TWD.