"On-site delivery" refers to a regional express company relative to national express companies such as STO and YTO. Now more and more e-commerce companies will set up multi-level storage centers in core cities and regional central cities in order to control logistics costs, improve delivery efficiency and service quality. For example, in addition to setting up first-level logistics centers in Beijing, Shanghai, Guangzhou, Chengdu, Wuhan and other places, JD.com has also set up second-level storage centers in regional central cities such as Xi'an, Jinan, Chongqing, etc.; Dangdang and Amazon China are similar. Each logistics center has a certain coverage area. In order to meet the delivery areas within the coverage area, on-site delivery companies came into being. On-site delivery companies generally cover a province, or several prefecture-level cities therein. Most of them can provide cash on delivery services (a small number of them provide POS card swiping services, which have a handling fee). In their delivery areas, they generally provide seamless coverage of cities, rural towns.