ISDN HOLDINGS LTD revenue for the last year amounted to 2.02 B HKD, the most of which — 1.54 B HKD — came from its highest performing source at the moment, Engineering Solutions - Motion Control, the year earlier bringing 1.62 B HKD. The greatest contribution to the revenue figure was made by China — last year it brought ISDN HOLDINGS LTD 1.47 B HKD, and the year before that — 1.42 B HKD.