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 operates a fleet of cargo aircraft, which are owned by its subsidiary SF Airlines. 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