The valid tracking numbers utilized by China Post strictly conform to the Universal Postal Union's S10 Standard. According to this globally recognized standard, the initial two letters of the tracking number are designated as the Service Indicators.

This comprehensive list has been organized to include tracking numbers specifically bearing the Service Indicator "LD." Each series under this Service Indicator encompasses a staggering 99,999,999 unique valid tracking numbers, signifying a vast network of packages being shipped and tracked globally.

The tracking numbers on this page are in the range of LD278100007CN-LD278199995CN. This range represents a subset of the more extensive "LD" series, further narrowing the search for individual packages. By utilizing these tracking numbers, customers can effectively monitor their packages, updating themselves on shipments' status at any time.