TONG YANG INDUSTRY revenue for the last year amounted to 25.60 B TWD, the most of which — 18.89 B TWD — came from its highest performing source at the moment, Maintenance Market, the year earlier bringing 17.22 B TWD. The greatest contribution to the revenue figure was made by Taiwan — last year it brought TONG YANG INDUSTRY 20.03 B TWD, and the year before that — 23.86 B TWD.