CITIC OFFSHORE HELICOPTER CO.,LTD. is a China-based company principally engaged in the provision of aviation integrated flight services. The Company mainly operates through five segments. Offshore Oil segment provides offshore oil helicopter flight services. Port Pilot segment mainly provides port pilot services in Tianjin Port, Lianyungang Port, Zhanjiang Port and Qingdao Port, among others. Land Navigation segment is mainly involved in aviation forest protection, power patrol line, polar expedition, escrow and other navigable helicopter flight service businesses. Navigation Maintenance segment provides airbus and helicopter companies with aftermarket maintenance services. Navigation Training segment is mainly engaged in the provision of model license training for pilots and maintenance engineers, as well as functional management training and others. The Company mainly operates its business in domestic market.