CHANG LAN TECH GP revenue for the last year amounted to 1.04 B CNY, the most of which — 292.36 M CNY — came from its highest performing source at the moment, Transformer Insulating oil. The greatest contribution to the revenue figure was made by China — last year it brought CHANG LAN TECH GP 1.23 B CNY, and the year before that — 1.04 B CNY.