ITBOOK HLDGS CO LTD revenue for the last year amounted to 30.51 B JPY, the most of which — 17.17 B JPY — came from its highest performing source at the moment, Ground Investigation Improvement, the year earlier bringing 14.12 B JPY. The greatest contribution to the revenue figure was made by Japan — last year it brought ITBOOK HLDGS CO LTD 30.53 B JPY, and the year before that — 26.29 B JPY.