EIKEN CHEMICAL CO revenue for the last year amounted to 43.27 B JPY, the most of which — 20.72 B JPY — came from its highest performing source at the moment, Immune Serological Examination, the year earlier bringing 20.59 B JPY. The greatest contribution to the revenue figure was made by Japan — last year it brought EIKEN CHEMICAL CO 34.47 B JPY, and the year before that — 34.13 B JPY.