After sales precautions:

After sales validity period:

① After the user submits a confirmation of receipt, the after-sales validity period starts from the second day after the confirmation of receipt and lasts for 7 days. If the confirmation of receipt is made on August 1st, the after-sales validity period is from August 8th to August 14th

② When the user confirms receipt, that is, the user confirms that the package has been received and there is no problem with the package, they can proceed with confirming receipt.

Apply for after-sales service: Contact online customer service.