About after-sales service:

1. The quality problem of the product and the problem caused by the seller shall be raised within 7 days after signing for it. If it needs to be returned or changed, it can be returned or changed unconditionally and the round-trip freight shall be borne by the seller. Beyond 7 days will not be able to deal with or can not be fully responsible for the handling, how to deal with the after-sales decision depends on the specific situation.
2. If the buyer refuses to sign without reason or the express logistics fails to contact the buyer, resulting in the return of the goods, and the buyer asks for the return or replacement of the goods after receiving the goods for non-reasons of the seller, the round-trip freight shall be borne by the buyer, and the refund or replacement shall be arranged after the goods are returned to the warehouse without error.