The U.S. Postal Service, a Fortune Global 500 company, began in 1775, an independent agency of the U.S. federal government, with a large civilian fleet around the world, and its mail can be sent to almost all countries or regions

The United States Postal Service (USPS), also known as the United States Post Office or the United States Postal Service, is an independent agency of the U.S. federal government. With 596,000 employees and 218,684 vehicles, the U.S. Postal Service has the largest civilian fleet in the world. 17.7 billion letters are processed each year, accounting for 40% of the global volume. The U.S. Postal Service is one of the few agencies mentioned in the U.S. Constitution.

USPS international express tracking system, real-time follow-up USPS tracking number query service. Domestic logistics service providers that cooperate with the United States Postal Service, including China Post Small Packet, e-Packet, American Postal Treasure and other systems, are connected with the USPS system in the United States, and obtain USPS tracking number query services.