the recruitment of SF is informal now. According to the relevant public information, it is known that the recruitment information of SF is published by bad intermediaries, and more than half of SF employees are informal employees. SF Express is a domestic express logistics integrated service provider, headquartered in Shenzhen. After years of development, it has initially established the ability to provide customers with integrated integrated integrated logistics solutions, not only providing logistics services at the distribution end, but also extending to the production, supply, sales and distribution links at the front end of the value chain. Starting from consumer demand, taking data as the traction, it uses big data analysis and cloud computing technology to provide customers with a package of solutions such as warehousing management, sales forecasting, big data analysis and financial management.