HAINAN DEVELOPMEN. revenue for the last year amounted to 4.18 B CNY, the most of which — 2.69 B CNY — came from its highest performing source at the moment, Curtain Wall Engineering, the year earlier bringing 2.11 B CNY. The greatest contribution to the revenue figure was made by China — last year it brought HAINAN DEVELOPMEN. 3.85 B CNY, and the year before that — 3.30 B CNY.