Three links and one delivery refers to four express delivery companies, namely: YTO, STO, ZTO and Yunda.

1. STO

Shanghai STO Logistics Company has 247 independent city business offices, 179 business halls, and 1,220 operation points. The express delivery company was founded in 1993 and is a company specializing in express delivery. Mainly domestic joint venture (private) enterprises. It basically covers cities at or above the prefecture level across the country and cities at or above the county level in developed areas, especially in Jiangsu, Zhejiang and Shanghai, basically achieving no blind spots in delivery. In February 2014, STO began internal testing of overseas shopping transshipment business.

2. Yunda

The "Yunda Express" brand was founded in August 1999 and is headquartered in Shanghai, China. It has now become an integrated express, logistics, e-commerce distribution and warehousing service. It is a national network-based brand express delivery enterprise, with service coverage covering 31 domestic provinces (autonomous regions and municipalities) and Hong Kong, Macao and Taiwan regions. Since 2013, Yunda Express has embarked on the pace of international development, and has successively carried out international express business cooperation with Japan, South Korea, the United States, Germany, Australia and other countries and regions, gradually going abroad to provide express services to overseas consumers.

3. Yuantong

Shanghai Yuantong Express Co., Ltd. has more than 100 transportation vehicles of various types, more than 30,000 employees, and its services cover more than 500 cities across the country. Founded on May 28, 2000. After fifteen years of careful development, it has now become a large-scale private enterprise integrating express delivery, logistics and e-commerce. The company is headquartered in Huaxin Town, Qingpu District, Shanghai. Over the past few years, the company's business has developed rapidly, and its network covers every city in China.

4. Zhongtong

Zhongtong Express Co., Ltd. was founded on May 8, 2002. It is a domestic logistics company integrating express delivery, logistics, e-commerce, and printing. Express delivery company. Registered trademarks "ZTO" and "ZTO".

Extended information:

Express delivery, also known as courier or express delivery, refers to logistics companies (including freight forwarders) that use their own independent networks or joint ventures (i.e. networking) to transport goods A new method of transporting documents or packages entrusted by users from the sender to the recipient door-to-door (hand-to-hand) quickly and safely.

Express delivery can be divided into broad and narrow senses. Express delivery in a broad sense refers to the express delivery of any goods (including bulk shipments); express delivery in a narrow sense refers specifically to emergency delivery services for business documents and small items. The object of research and analysis in this textbook is mainly the express delivery industry in a narrow sense. From the perspective of service standards, express delivery generally refers to express delivery services completed within 48 hours. From the definition of express delivery, the following three characteristics of express delivery can be summarized:

From the perspective of economic category, express delivery is a branch industry of the logistics industry, and express delivery research is subordinate to the category of logistics.

From a business operation perspective, express delivery is a new mode of transportation and an important link in the supply chain.

From the perspective of business nature, express delivery is an emerging service trade with high added value.

In January 2018, ten express delivery companies including EMS, SF Express, ZTO, STO, YTO, Yunda, Best, Deppon, JD Logistics, and Suning Logistics stated that they would not provide express delivery during the Spring Festival. Closing.