Scope
Do not hard-code '4 repairs for same defect' as the only refund trigger; current 3-packs rules contain multiple safety, repair-attempt and downtime pathways.
Search the portal
China legal tool China law National framework
Interactive China legal orientation tool. Review the result with the relevant legal guide and qualified counsel where facts or local implementation matter.
Do not hard-code '4 repairs for same defect' as the only refund trigger; current 3-packs rules contain multiple safety, repair-attempt and downtime pathways.
Use the output to organize the facts, then confirm the source, evidence, local implementation and available remedy before acting.