SINOPEC OILFIELD SERVICE CORPORATION revenue for the last year amounted to 79.98 B CNY, the most of which — 39.80 B CNY — came from its highest performing source at the moment, Drilling Engineering, the year earlier bringing 36.81 B CNY. The greatest contribution to the revenue figure was made by China — last year it brought SINOPEC OILFIELD SERVICE CORPORATION 63.84 B CNY, and the year before that — 60.65 B CNY.