A GACC-related registration reference is important, but it does not replace product eligibility, orchard and packing-source controls, phytosanitary compliance, lot testing or correct Chinese customs declarations.
The importer should be able to move from a carton mark back to the packing date and approved production source. The exporter should be able to show that the fruit loaded is the same lot inspected, sampled and described in the documents.
Build that chain before discussing a repeat program. It reduces clearance risk and also makes quality claims measurable when a shipment arrives with a dispute.