SF Express Co., Ltd. is a Chinese multinational delivery services and logistics company based in Shenzhen, Guangdong. It is the largest courier in China, and provides domestic and international express delivery. SF Express has a fleet of 69 cargo aircraft, including 37 Boeing 757, 17 Boeing 737, 13 Boeing 767 and two Boeing 747 all-cargo freighters, which are owned by its subsidiary SF Airlines. As of 2018, it has transported around 2 million tonnes of cargo, since its operations began in 2009. The parent company of SF Express, SF Holding trades on the Shenzhen Stock Exchange and the Hong Kong Stock Exchange. It is a constituent of SZSE 100 Index. Wikipedia