David Wang
-Updated on June 24, 2026
Why did my STO Express tracking number stop working after the parcel left China?
For cross-border shipments, STO Global handles the export leg and then hands the parcel to a partner carrier in the destination country. After that handoff, updates come from the local carrier and may appear under a different number. Tracking on InstantParcels follows the parcel across both carriers in one timeline so you do not lose visibility.
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