Ctrip.com is the largest online travel agency in China. The company generates about 82% of sales by serving as a consolidator for hotel reservations and air ticketing transactions. The rest of Ctrip's revenue comes from package tours and corporate travel. More than 80% of its sales come through websites and mobile platforms, while the rest come from call centres. The company was founded in 1999 and listed on the Nasdaq in December 2003.