5. Batch number
After bagging according to the designated postal route and postal route zoning, a batch number will be generated. A batch contains multiple mail bags. Batch numbers can help express delivery companies and customers better understand the transportation status of packages.
Registered small packages are one of the more important packages and have a higher price compared to regular surface mail. The registered package is subject to inquiry. If it is lost or damaged due to the responsibility of the post office, compensation can be made according to regulations.