KOKEN BORING MACHINE revenue for the last year amounted to 8.21 B JPY, the most of which — 4.96 B JPY — came from its highest performing source at the moment, Boring Machinery-related, the year earlier bringing 4.14 B JPY. The greatest contribution to the revenue figure was made by Japan — last year it brought KOKEN BORING MACHINE 7.96 B JPY, and the year before that — 6.88 B JPY.